/* ================================================================
   KTTK - Keys To The Kingdom
   AI-Automated Cyberpunk Streetwear
   Single CSS file - No preprocessors - No frameworks
   ================================================================ */

/* ================================================================
   SECTION 1: DESIGN TOKENS
   331 CSS custom properties in 3-tier architecture
   ================================================================ */

:root {
  /* =============================================
     TIER 1: PRIMITIVES
     Raw values. Never reference from components.
     ============================================= */

  /* --- Colors: Neutrals --- */
  --primitive-black: #0A0A0A;
  --primitive-black-deep: #050505;
  --primitive-gray-950: #111111;
  --primitive-gray-900: #1A1A1A;
  --primitive-gray-800: #222222;
  --primitive-gray-700: #333333;
  --primitive-gray-500: #666666;
  --primitive-gray-400: #888888;
  --primitive-gray-300: #B0B0B0;
  --primitive-white: #F0F0F0;
  --primitive-pure-white: #FFFFFF;

  /* --- Colors: Brand --- */
  --primitive-red-500: #FF0033;
  --primitive-red-400: #FF4D4D;
  --primitive-red-600: #CC0029;
  --primitive-red-700: #B30023;
  --primitive-red-glow-60: rgba(255, 0, 51, 0.6);
  --primitive-red-glow-30: rgba(255, 0, 51, 0.3);
  --primitive-red-glow-15: rgba(255, 0, 51, 0.15);
  --primitive-red-glow-08: rgba(255, 0, 51, 0.08);

  /* --- Colors: Secondary accent (cyan — "system/granted" channel, added 2026-06-15) --- */
  --primitive-cyan-500: #00E5FF;
  --primitive-cyan-400: #5CF0FF;
  --primitive-cyan-600: #00B8CC;
  --primitive-cyan-glow-60: rgba(0, 229, 255, 0.6);
  --primitive-cyan-glow-30: rgba(0, 229, 255, 0.3);
  --primitive-cyan-glow-15: rgba(0, 229, 255, 0.15);
  --primitive-cyan-glow-08: rgba(0, 229, 255, 0.08);

  /* --- Colors: Status --- */
  --primitive-green-400: #00FF41;
  --primitive-green-500: #00CC33;
  --primitive-amber-500: #F59E0B;
  --primitive-amber-400: #FBBF24;
  --primitive-gold-400: #FFD700;

  /* --- Colors: Chromatic (decorative) --- */
  --primitive-chromatic-red: #FF0000;
  --primitive-chromatic-cyan: #00FFFF;

  /* --- Colors: Alpha --- */
  --primitive-white-alpha-08: rgba(240, 240, 240, 0.08);
  --primitive-white-alpha-10: rgba(240, 240, 240, 0.1);
  --primitive-black-alpha-40: rgba(0, 0, 0, 0.4);
  --primitive-black-alpha-95: rgba(10, 10, 10, 0.95);

  /* --- Typography: Families --- */
  --primitive-font-display: 'Bebas Neue', Impact, 'Arial Black', sans-serif;
  --primitive-font-mono: 'Share Tech Mono', 'Courier New', Courier, monospace;
  --primitive-font-system: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* --- Typography: Sizes (px) --- */
  --primitive-font-size-10: 0.625rem;
  --primitive-font-size-12: 0.75rem;
  --primitive-font-size-14: 0.875rem;
  --primitive-font-size-16: 1rem;
  --primitive-font-size-18: 1.125rem;
  --primitive-font-size-20: 1.25rem;
  --primitive-font-size-24: 1.5rem;
  --primitive-font-size-28: 1.75rem;
  --primitive-font-size-32: 2rem;
  --primitive-font-size-40: 2.5rem;
  --primitive-font-size-48: 3rem;
  --primitive-font-size-64: 4rem;

  /* --- Typography: Line Heights --- */
  --primitive-leading-none: 1.0;
  --primitive-leading-tight: 1.1;
  --primitive-leading-snug: 1.2;
  --primitive-leading-normal: 1.4;
  --primitive-leading-relaxed: 1.6;

  /* --- Typography: Letter Spacing --- */
  --primitive-tracking-tight: 0.02em;
  --primitive-tracking-normal: 0.05em;
  --primitive-tracking-wide: 0.08em;
  --primitive-tracking-wider: 0.1em;
  --primitive-tracking-widest: 0.15em;

  /* --- Typography: Weights --- */
  --primitive-weight-normal: 400;
  --primitive-weight-bold: 700;

  /* --- Spacing (px) --- */
  --primitive-space-1: 4px;
  --primitive-space-2: 8px;
  --primitive-space-3: 12px;
  --primitive-space-4: 16px;
  --primitive-space-5: 20px;
  --primitive-space-6: 24px;
  --primitive-space-8: 32px;
  --primitive-space-10: 40px;
  --primitive-space-12: 48px;
  --primitive-space-16: 64px;
  --primitive-space-20: 80px;
  --primitive-space-24: 96px;

  /* --- Durations (ms) --- */
  --primitive-duration-0: 0ms;
  --primitive-duration-100: 100ms;
  --primitive-duration-200: 200ms;
  --primitive-duration-250: 250ms;
  --primitive-duration-300: 300ms;
  --primitive-duration-400: 400ms;
  --primitive-duration-800: 800ms;
  --primitive-duration-1500: 1500ms;
  --primitive-duration-2000: 2000ms;
  --primitive-duration-3000: 3000ms;

  /* --- Easing --- */
  --primitive-ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --primitive-ease-decelerate: cubic-bezier(0, 0, 0.2, 1);
  --primitive-ease-accelerate: cubic-bezier(0.4, 0, 1, 1);
  --primitive-ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --primitive-ease-glitch: steps(2, end);
  --primitive-ease-typing: steps(30, end);

  /* --- Radii --- */
  --primitive-radius-0: 0px;
  --primitive-radius-2: 2px;
  --primitive-radius-4: 4px;
  --primitive-radius-18: 18px;
  --primitive-radius-full: 50%;

  /* --- Breakpoints (reference only, not usable in var()) --- */
  /* Mobile: 375px, Tablet: 768px, Desktop: 1280px */

  /* =============================================
     TIER 2: SEMANTIC
     Intent-based. Override these for themes.
     ============================================= */

  /* --- Surfaces --- */
  --color-surface-primary: var(--primitive-black);
  --color-surface-secondary: var(--primitive-gray-950);
  --color-surface-elevated: var(--primitive-gray-900);
  --color-surface-overlay: var(--primitive-black-alpha-95);
  --color-surface-sunken: var(--primitive-black-deep);

  /* --- Text --- */
  --color-text-primary: var(--primitive-white);
  --color-text-secondary: var(--primitive-gray-300);
  --color-text-secondary-value: #B0B0B0;
  --color-text-tertiary: var(--primitive-gray-400);
  --color-text-disabled: var(--primitive-gray-500);
  --color-text-on-accent: var(--primitive-white);

  /* --- Accent --- */
  --color-accent-primary: var(--primitive-red-500);
  --color-accent-hover: var(--primitive-red-400);
  --color-accent-active: var(--primitive-red-600);
  --color-accent-glow: var(--primitive-red-glow-15);
  --color-accent-glow-medium: var(--primitive-red-glow-30);
  --color-accent-glow-intense: var(--primitive-red-glow-60);

  /* --- Secondary accent: cyan = "system / granted / active" channel (2026-06-15).
     Red stays the primary danger/CTA channel; cyan is the system axis — links,
     active/online states, info, and UI chrome. Keep the two apart: never abut
     red and cyan text (chromostereopsis vibration) — separate with black gutters. */
  --color-accent-secondary: var(--primitive-cyan-500);
  --color-accent-secondary-hover: var(--primitive-cyan-400);
  --color-accent-secondary-active: var(--primitive-cyan-600);
  --color-accent-secondary-glow: var(--primitive-cyan-glow-15);
  --color-accent-secondary-glow-medium: var(--primitive-cyan-glow-30);

  /* --- Status --- */
  --color-success: var(--primitive-green-400);
  --color-warning: var(--primitive-amber-500);
  --color-error: var(--primitive-red-500);
  --color-info: var(--primitive-cyan-500);  /* was gray — info now reads as the cyan system channel */

  /* --- Borders --- */
  --color-border-default: var(--primitive-gray-900);
  --color-border-subtle: var(--primitive-white-alpha-08);
  --color-border-interactive: var(--primitive-gray-700);
  --color-border-focus: var(--primitive-red-500);
  --color-border-hover: var(--primitive-white);

  /* --- Special --- */
  --color-founding: var(--primitive-gold-400);
  --color-terminal-green: var(--primitive-green-400);
  --color-chromatic-red: var(--primitive-chromatic-red);
  --color-chromatic-cyan: var(--primitive-chromatic-cyan);

  /* --- Typography --- */
  --font-display: var(--primitive-font-display);
  --font-body: var(--primitive-font-mono);
  --font-system: var(--primitive-font-system);

  --font-size-xs: var(--primitive-font-size-10);
  --font-size-sm: var(--primitive-font-size-12);
  --font-size-base: var(--primitive-font-size-14);
  --font-size-md: var(--primitive-font-size-16);
  --font-size-lg: var(--primitive-font-size-20);
  --font-size-xl: var(--primitive-font-size-24);
  --font-size-2xl: var(--primitive-font-size-32);
  --font-size-3xl: var(--primitive-font-size-40);
  --font-size-4xl: var(--primitive-font-size-48);
  --font-size-hero: var(--primitive-font-size-64);

  --font-weight-normal: var(--primitive-weight-normal);
  --font-weight-bold: var(--primitive-weight-bold);

  --leading-none: var(--primitive-leading-none);
  --leading-tight: var(--primitive-leading-tight);
  --leading-snug: var(--primitive-leading-snug);
  --leading-normal: var(--primitive-leading-normal);
  --leading-relaxed: var(--primitive-leading-relaxed);

  --tracking-tight: var(--primitive-tracking-tight);
  --tracking-normal: var(--primitive-tracking-normal);
  --tracking-wide: var(--primitive-tracking-wide);
  --tracking-wider: var(--primitive-tracking-wider);
  --tracking-widest: var(--primitive-tracking-widest);

  /* --- Spacing --- */
  --space-1: var(--primitive-space-1);
  --space-2: var(--primitive-space-2);
  --space-3: var(--primitive-space-3);
  --space-4: var(--primitive-space-4);
  --space-5: var(--primitive-space-5);
  --space-6: var(--primitive-space-6);
  --space-8: var(--primitive-space-8);
  --space-10: var(--primitive-space-10);
  --space-12: var(--primitive-space-12);
  --space-16: var(--primitive-space-16);
  --space-20: var(--primitive-space-20);
  --space-24: var(--primitive-space-24);

  /* --- Duration --- */
  --duration-instant: var(--primitive-duration-0);
  --duration-fast: var(--primitive-duration-100);
  --duration-normal: var(--primitive-duration-200);
  --duration-moderate: var(--primitive-duration-300);
  --duration-slow: var(--primitive-duration-400);
  --duration-dramatic: var(--primitive-duration-800);
  --duration-success-revert: var(--primitive-duration-1500);
  --duration-typing: var(--primitive-duration-2000);
  --duration-glow-cycle: var(--primitive-duration-3000);

  /* --- Easing --- */
  --ease-default: var(--primitive-ease-standard);
  --ease-out: var(--primitive-ease-decelerate);
  --ease-in: var(--primitive-ease-accelerate);
  --ease-bounce: var(--primitive-ease-bounce);
  --ease-glitch: var(--primitive-ease-glitch);
  --ease-typing: var(--primitive-ease-typing);

  /* --- Radius --- */
  --radius-none: var(--primitive-radius-0);
  --radius-sm: var(--primitive-radius-2);
  --radius-md: var(--primitive-radius-4);
  --radius-pill: var(--primitive-radius-18);
  --radius-full: var(--primitive-radius-full);

  /* --- Z-Index --- */
  --z-base: 0;
  --z-card: 10;
  --z-sticky: 100;
  --z-header: 1000;
  --z-overlay: 2000;
  --z-toast: 3000;
  --z-scanline: 9000;

  /* --- Shadows (Glow System) --- */
  --shadow-glow-subtle:
    0 0 8px var(--color-accent-glow),
    0 0 20px var(--primitive-red-glow-08);
  --shadow-glow-medium:
    0 0 8px var(--color-accent-glow-medium),
    0 0 20px var(--color-accent-glow),
    0 0 40px var(--primitive-red-glow-08);
  --shadow-glow-intense:
    0 0 4px var(--color-accent-glow-intense),
    0 0 12px var(--color-accent-glow-medium),
    0 0 24px var(--color-accent-glow),
    0 0 48px var(--primitive-red-glow-08);
  --shadow-glow-success:
    0 0 8px rgba(0, 255, 65, 0.4),
    0 0 20px rgba(0, 255, 65, 0.2);
  --shadow-none: none;

  /* --- Text Shadows (Glow) --- */
  --text-glow-subtle: 0 0 4px rgba(255, 0, 51, 0.4);
  --text-glow-medium:
    0 0 4px rgba(255, 0, 51, 0.6),
    0 0 12px rgba(255, 0, 51, 0.3);
  --text-glow-intense:
    0 0 4px rgba(255, 0, 51, 0.8),
    0 0 12px rgba(255, 0, 51, 0.4),
    0 0 24px rgba(255, 0, 51, 0.2);

  /* --- Borders (composite) --- */
  --border-default: 1px solid var(--color-border-default);
  --border-subtle: 1px solid var(--color-border-subtle);
  --border-interactive: 1px solid var(--color-border-interactive);
  --border-focus: 2px solid var(--color-border-focus);
  --border-accent: 1px solid var(--color-accent-primary);
  --border-accent-thick: 2px solid var(--color-accent-primary);

  /* --- Layout --- */
  --container-max-width: 1200px;
  --container-padding-mobile: var(--space-4);
  --container-padding-tablet: var(--space-8);
  --container-padding-desktop: var(--space-12);

  /* --- Grid --- */
  --grid-columns-mobile: 2;
  --grid-columns-tablet: 3;
  --grid-columns-desktop: 4;
  --grid-gap-mobile: var(--space-3);
  --grid-gap-tablet: var(--space-4);
  --grid-gap-desktop: var(--space-6);

  /* --- Icon Sizes --- */
  --icon-sm: 16px;
  --icon-md: 20px;
  --icon-lg: 24px;
  --icon-xl: 48px;

  /* --- Focus --- */
  --focus-ring-color: var(--color-border-focus);
  --focus-ring-width: 2px;
  --focus-ring-offset: 2px;

  /* =============================================
     TIER 3: COMPONENT
     Scoped to individual components.
     ============================================= */

  /* --- Navigation --- */
  --nav-height: 64px;
  --nav-height-mobile: 56px;
  --nav-bg: var(--color-surface-primary);
  --nav-bg-scrolled: var(--color-surface-overlay);
  --nav-border: var(--border-default);
  --nav-link-color: var(--color-text-primary);
  --nav-link-color-hover: var(--color-accent-secondary);  /* cyan = system/navigation channel */
  --nav-link-color-active: var(--color-accent-primary);   /* red = current-location marker */
  --nav-link-font: var(--font-body);
  --nav-link-size: var(--font-size-base);
  --nav-link-tracking: var(--tracking-normal);
  --nav-active-border: var(--border-accent-thick);
  --nav-z: var(--z-header);
  --nav-padding-desktop: var(--space-12);
  --nav-padding-mobile: var(--space-4);

  /* --- Mobile Nav Overlay --- */
  --mobile-nav-bg: var(--color-surface-primary);
  --mobile-nav-z: var(--z-overlay);
  --mobile-nav-link-font: var(--font-display);
  --mobile-nav-link-size: var(--font-size-2xl);
  --mobile-nav-link-height: 48px;
  --mobile-nav-link-gap: var(--space-6);

  /* --- Buttons --- */
  --button-font: var(--font-display);
  --button-size: var(--font-size-md);
  --button-tracking: var(--tracking-normal);
  --button-height: 48px;
  --button-height-mobile: 56px;
  --button-padding-x: var(--space-6);
  --button-radius: var(--radius-sm);

  --button-primary-bg: var(--color-accent-primary);
  --button-primary-bg-hover: var(--color-accent-active);
  --button-primary-bg-active: var(--color-accent-active);
  --button-primary-text: var(--color-text-on-accent);
  --button-primary-glow-hover: var(--shadow-glow-medium);

  --button-ghost-bg: transparent;
  --button-ghost-bg-hover: var(--primitive-white-alpha-10);
  --button-ghost-border: 1px solid var(--color-text-primary);
  --button-ghost-text: var(--color-text-primary);

  --button-disabled-bg: var(--primitive-gray-700);
  --button-disabled-text: var(--color-text-disabled);

  --button-success-bg: var(--color-success);
  --button-success-glow: var(--shadow-glow-success);

  /* --- Product Card --- */
  --card-bg: var(--color-surface-secondary);
  --card-border: var(--border-default);
  --card-border-hover: 1px solid var(--color-accent-primary);
  --card-radius: var(--radius-md);
  --card-hover-lift: -4px;
  --card-hover-glow: var(--shadow-glow-medium);
  --card-padding: var(--space-4);
  --card-padding-mobile: var(--space-3);
  --card-gap: var(--space-6);
  --card-gap-mobile: var(--space-3);
  --card-name-font: var(--font-body);
  --card-name-size: var(--font-size-base);
  --card-name-color: var(--color-text-primary);
  --card-price-font: var(--font-display);
  --card-price-size: var(--font-size-lg);
  --card-price-color: var(--color-text-primary);
  --card-cta-height: 40px;
  --card-image-aspect: 1 / 1;
  --card-image-bg: var(--color-surface-secondary);
  --card-sold-out-overlay: var(--primitive-black-alpha-40);

  /* --- Tier Card --- */
  --tier-bg: var(--color-surface-secondary);
  --tier-border: var(--border-default);
  --tier-border-anchor: var(--border-accent);
  --tier-padding: var(--space-6);
  --tier-name-font: var(--font-display);
  --tier-name-size: var(--font-size-xl);
  --tier-price-font: var(--font-display);
  --tier-price-size: var(--font-size-4xl);
  --tier-price-color: var(--color-accent-primary);
  --tier-feature-font: var(--font-body);
  --tier-feature-size: var(--font-size-base);
  --tier-feature-prefix-color: var(--color-text-disabled);
  --tier-anchor-glow: var(--shadow-glow-subtle);
  --tier-anchor-scale: 1.0;

  /* --- Badge --- */
  --badge-font: var(--font-body);
  --badge-size: var(--font-size-xs);
  --badge-tracking: var(--tracking-wider);
  --badge-padding: var(--space-1) var(--space-2);
  --badge-radius: var(--radius-sm);
  --badge-position-top: var(--space-2);
  --badge-position-right: var(--space-2);

  --badge-new-bg: transparent;
  --badge-new-color: var(--color-text-primary);
  --badge-new-border: 1px solid var(--color-text-primary);

  --badge-limited-bg: var(--color-accent-primary);
  --badge-limited-color: var(--color-text-primary);
  --badge-limited-border: none;

  --badge-sold-out-bg: var(--primitive-gray-700);
  --badge-sold-out-color: var(--color-text-primary);
  --badge-sold-out-border: none;

  --badge-best-value-bg: var(--color-accent-primary);
  --badge-best-value-color: var(--color-text-primary);
  --badge-best-value-border: none;

  --badge-founding-bg: transparent;
  --badge-founding-color: var(--color-founding);
  --badge-founding-border: 1px solid var(--color-founding);

  /* --- Filter Pill --- */
  --pill-height: 36px;
  --pill-padding-x: var(--space-4);
  --pill-radius: var(--radius-pill);
  --pill-font: var(--font-body);
  --pill-size: var(--font-size-base);
  --pill-bg: transparent;
  --pill-bg-active: var(--color-accent-primary);
  --pill-color: var(--color-text-secondary);
  --pill-color-hover: var(--color-text-primary);
  --pill-color-active: var(--color-text-primary);
  --pill-border: 1px solid var(--color-border-interactive);
  --pill-border-hover: 1px solid var(--color-text-primary);
  --pill-border-active: 1px solid var(--color-accent-primary);
  --pill-gap: var(--space-2);

  /* --- Size Selector --- */
  --size-pill-dimension: 44px;
  --size-pill-gap: var(--space-2);
  --size-pill-radius: var(--radius-md);
  --size-pill-bg: transparent;
  --size-pill-bg-selected: var(--color-accent-secondary);
  --size-pill-color: var(--color-text-primary);
  --size-pill-color-unavailable: var(--color-text-disabled);
  --size-pill-border: 1px solid var(--color-border-interactive);
  --size-pill-border-hover: 1px solid var(--color-text-primary);
  --size-pill-border-selected: 1px solid var(--color-accent-secondary);
  --size-pill-border-unavailable: 1px solid var(--color-border-default);

  /* --- Input --- */
  --input-bg: var(--color-surface-secondary);
  --input-border: var(--border-interactive);
  --input-border-focus: 1px solid var(--color-accent-primary);
  --input-border-error: 1px solid var(--color-error);
  --input-text: var(--color-text-primary);
  --input-placeholder: var(--color-text-disabled);
  --input-font: var(--font-body);
  --input-size: var(--font-size-base);
  --input-height: 48px;
  --input-padding: var(--space-3) var(--space-4);
  --input-radius: var(--radius-sm);
  --input-label-color: var(--color-terminal-green);
  --input-label-font: var(--font-body);
  --input-label-size: var(--font-size-base);

  /* --- Select (Sort Dropdown) --- */
  --select-bg: var(--color-surface-secondary);
  --select-border: var(--border-interactive);
  --select-text: var(--color-text-primary);
  --select-font: var(--font-body);

  /* --- Accordion --- */
  --accordion-border: 1px solid var(--color-border-default);
  --accordion-header-padding: var(--space-4) 0;
  --accordion-header-font: var(--font-display);
  --accordion-header-size: var(--font-size-md);
  --accordion-header-size-value: 18px;
  --accordion-header-color: var(--color-text-primary);
  --accordion-prefix-color: var(--color-accent-secondary);  /* terminal prompt = cyan system channel */
  --accordion-content-padding: 0 0 var(--space-4) 0;
  --accordion-content-font: var(--font-body);
  --accordion-content-size: var(--font-size-base);
  --accordion-content-color: var(--color-text-secondary);
  --accordion-content-leading: var(--leading-relaxed);
  --accordion-chevron-size: var(--icon-md);

  /* --- Hero --- */
  --hero-min-height: 100vh;
  --hero-logo-width: 200px;
  --hero-logo-glow: drop-shadow(0 0 20px rgba(255, 0, 51, 0.4));
  --hero-logo-glow-peak: drop-shadow(0 0 20px rgba(255, 0, 51, 0.8));
  --hero-tagline-font: var(--font-body);
  --hero-tagline-size: var(--font-size-lg);
  --hero-tagline-color: var(--color-text-primary);
  --hero-cta-gap: var(--space-4);
  --hero-scroll-indicator-opacity: 0.6;
  --hero-scanline-opacity: 0.03;

  /* --- Featured Strip --- */
  --featured-heading-font: var(--font-display);
  --featured-heading-size: var(--font-size-xl);
  --featured-heading-color: var(--color-text-primary);
  --featured-prefix-color: var(--color-accent-secondary);  /* terminal prompt = cyan system channel */

  /* --- Subscription CTA Block --- */
  --sub-cta-bg: var(--color-surface-sunken);
  --sub-cta-padding: var(--space-16) var(--space-6);
  --sub-cta-max-width: 800px;
  --sub-cta-anchor-border: 2px solid var(--color-accent-primary);

  /* --- Email Capture --- */
  --email-bg: var(--color-surface-primary);
  --email-border: var(--border-default);
  --email-radius: var(--radius-md);
  --email-padding: var(--space-12) var(--space-6);
  --email-max-width: 560px;
  --email-heading-font: var(--font-display);
  --email-heading-size: var(--font-size-xl);
  --email-status-success: var(--color-success);
  --email-status-error: var(--color-error);

  /* --- Brand Pillars --- */
  --pillar-gap-desktop: var(--space-12);
  --pillar-gap-mobile: var(--space-8);
  --pillar-icon-size: var(--icon-xl);
  --pillar-icon-color: var(--color-accent-primary);
  --pillar-title-font: var(--font-display);
  --pillar-title-size: var(--font-size-lg);
  --pillar-title-color: var(--color-text-primary);
  --pillar-desc-font: var(--font-body);
  --pillar-desc-size: var(--font-size-base);
  --pillar-desc-color: var(--color-text-secondary);
  --pillar-desc-leading: var(--leading-relaxed);

  /* --- Image Gallery --- */
  --gallery-thumb-size: 80px;
  --gallery-thumb-gap: var(--space-2);
  --gallery-thumb-border: 2px solid transparent;
  --gallery-thumb-border-active: 2px solid var(--color-accent-secondary);  /* selected thumb = cyan */
  --gallery-main-radius: var(--radius-md);
  --gallery-main-bg: var(--color-surface-secondary);

  /* --- Quantity Stepper --- */
  --qty-button-size: 44px;
  --qty-font: var(--font-body);
  --qty-size: var(--font-size-md);
  --qty-border: var(--border-interactive);

  /* --- Breadcrumb --- */
  --breadcrumb-font: var(--font-body);
  --breadcrumb-size: var(--font-size-sm);
  --breadcrumb-color: var(--color-text-tertiary);
  --breadcrumb-color-active: var(--color-text-primary);
  --breadcrumb-separator: '/';

  /* --- Countdown Timer --- */
  --countdown-font: var(--font-body);
  --countdown-size: var(--font-size-base);
  --countdown-color: var(--color-accent-primary);
  --countdown-tracking: var(--tracking-wider);
  --countdown-prefix-color: var(--color-accent-secondary);  /* terminal prompt = cyan system channel */

  /* --- Founding Member Bar --- */
  --founding-font: var(--font-body);
  --founding-border: 1px solid var(--color-accent-primary);
  --founding-padding: var(--space-2) var(--space-4);
  --founding-count-color: var(--color-accent-primary);

  /* --- Guarantee Block --- */
  --guarantee-bg: var(--color-surface-secondary);
  --guarantee-border: var(--border-default);
  --guarantee-padding: var(--space-8);
  --guarantee-icon-size: var(--icon-xl);

  /* --- Sticky Bottom Bar --- */
  --sticky-bar-bg: var(--color-surface-primary);
  --sticky-bar-border: 1px solid var(--color-border-default);
  --sticky-bar-padding: var(--space-3) var(--space-4);
  --sticky-bar-cta-height: var(--button-height-mobile);
  --sticky-bar-z: var(--z-sticky);

  /* --- Footer --- */
  --footer-bg: var(--color-surface-sunken);
  --footer-border: 1px solid var(--color-border-default);
  --footer-padding: var(--space-12);
  --footer-heading-font: var(--font-display);
  --footer-heading-size: var(--font-size-md);
  --footer-heading-color: var(--color-text-primary);
  --footer-link-color: var(--color-text-secondary);
  --footer-link-color-hover: var(--color-text-primary);
  --footer-tagline-font: var(--font-body);
  --footer-tagline-size: var(--font-size-sm);
  --footer-tagline-color: var(--color-text-tertiary);
  --footer-padding-bottom-mobile: var(--space-20);

  /* --- Skeleton Loader --- */
  --skeleton-bg: var(--color-surface-elevated);
  --skeleton-shine: var(--primitive-gray-800);
  --skeleton-radius: var(--radius-md);

  /* --- Toast / Notification --- */
  --toast-bg: var(--color-surface-secondary);
  --toast-border-width: 3px;
  --toast-border-success: var(--color-success);
  --toast-border-error: var(--color-error);
  --toast-border-info: var(--color-info);
  --toast-font: var(--font-body);
  --toast-size: var(--font-size-base);
  --toast-color: var(--color-text-primary);
  --toast-padding: var(--space-4);
  --toast-z: var(--z-toast);
  --toast-duration: var(--duration-moderate);

  /* --- Glitch Text --- */
  --glitch-offset: 2px;
  --glitch-color-r: var(--color-chromatic-red);
  --glitch-color-c: var(--color-chromatic-cyan);
  --glitch-duration: var(--duration-moderate);
  --glitch-timing: var(--ease-glitch);

  /* --- Scanline Overlay --- */
  --scanline-opacity: 0.12;
  --scanline-line-gap: 4px;
  --scanline-line-width: 4px;
  --scanline-z: var(--z-scanline);
  --scanline-sweep-duration: 8s;

  /* --- Noise Overlay --- */
  --noise-opacity: 0.03;
  --noise-blend: overlay;
  --noise-z: calc(var(--z-scanline) - 1);

  /* --- Chromatic Aberration --- */
  --chromatic-offset: 2px;
  --chromatic-shadow:
    var(--chromatic-offset) 0 var(--color-chromatic-red),
    calc(var(--chromatic-offset) * -1) 0 var(--color-chromatic-cyan);

  /* --- Transition Presets --- */
  --transition-hover:
    transform var(--duration-normal) var(--ease-default),
    box-shadow var(--duration-normal) var(--ease-default),
    border-color var(--duration-normal) var(--ease-default);
  --transition-color:
    color var(--duration-normal) var(--ease-default),
    background-color var(--duration-normal) var(--ease-default);
  --transition-fade: opacity var(--duration-normal) var(--ease-out);
  --transition-slide: transform var(--duration-moderate) var(--ease-out);
  --transition-card:
    transform var(--duration-moderate) var(--ease-default),
    box-shadow var(--duration-moderate) var(--ease-default),
    border-color var(--duration-moderate) var(--ease-default);

  /* --- Product Detail Specific --- */
  --detail-name-font: var(--font-display);
  --detail-name-size: var(--font-size-2xl);
  --detail-name-color: var(--color-text-primary);
  --detail-price-font: var(--font-display);
  --detail-price-size: var(--font-size-xl);
  --detail-price-size-value: 28px;
  --detail-price-color: var(--color-accent-primary);
  --detail-desc-font: var(--font-body);
  --detail-desc-size: var(--font-size-base);
  --detail-desc-color: var(--color-text-secondary);
  --detail-stock-font: var(--font-body);
  --detail-stock-size: var(--font-size-sm);
  --detail-stock-color: var(--color-accent-secondary);  /* IN STOCK = granted/available = cyan */
  --detail-stock-tracking: var(--tracking-widest);

  /* --- Cart Badge --- */
  --cart-badge-size: 20px;
  --cart-badge-bg: var(--color-accent-secondary);  /* cart count = cyan system channel */
  --cart-badge-color: var(--color-surface-primary);  /* dark text — legible on cyan badge */
  --cart-badge-font: var(--font-body);
  --cart-badge-font-size: var(--font-size-xs);
  --cart-badge-radius: var(--radius-full);

  /* --- Skip Link --- */
  --skip-link-bg: var(--color-accent-primary);
  --skip-link-color: var(--color-text-on-accent);
  --skip-link-padding: var(--space-2) var(--space-4);
  --skip-link-z: calc(var(--z-scanline) + 1);

  /* --- Filter Bottom Sheet (Mobile) --- */
  --bottom-sheet-bg: var(--color-surface-secondary);
  --bottom-sheet-border: 1px solid var(--color-border-default);
  --bottom-sheet-radius: 12px 12px 0 0;
  --bottom-sheet-padding: var(--space-6);
  --bottom-sheet-z: var(--z-overlay);
  --bottom-sheet-handle-width: 40px;
  --bottom-sheet-handle-height: 4px;
  --bottom-sheet-handle-bg: var(--color-border-interactive);
}


/* ================================================================
   SECTION 2: CSS RESET + BASE STYLES
   ================================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--color-surface-primary);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--leading-normal);
  overflow-x: hidden;
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-text-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-accent-secondary);  /* cyan = system/content-link channel; CTAs stay red */
}

button {
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

::selection {
  background: var(--color-accent-primary);
  color: var(--color-text-on-accent);
}

:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}


/* ================================================================
   SECTION 3: TYPOGRAPHY
   ================================================================ */

.kttk-heading,
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  line-height: var(--leading-tight);
  font-weight: var(--font-weight-normal);
}

h1, .kttk-heading--h1 {
  font-size: var(--font-size-3xl);
}

h2, .kttk-heading--h2 {
  font-size: var(--font-size-2xl);
}

h3, .kttk-heading--h3 {
  font-size: var(--font-size-xl);
}

h4, .kttk-heading--h4 {
  font-size: var(--font-size-lg);
}

h5, .kttk-heading--h5 {
  font-size: var(--font-size-md);
}

h6, .kttk-heading--h6 {
  font-size: var(--font-size-base);
}

.kttk-mono {
  font-family: var(--font-body);
  letter-spacing: var(--tracking-normal);
}

.kttk-accent-prefix {
  color: var(--color-accent-secondary);  /* $ and > prefixes = cyan system channel */
  margin-right: var(--space-2);
}


/* ================================================================
   SECTION 4: LAYOUT UTILITIES
   ================================================================ */

.kttk-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding-mobile);
}

.kttk-section {
  padding: var(--space-16) 0;
}

.kttk-grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-columns-mobile), 1fr);
  gap: var(--grid-gap-mobile);
}

.kttk-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.kttk-skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--skip-link-bg);
  color: var(--skip-link-color);
  padding: var(--skip-link-padding);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  z-index: var(--skip-link-z);
  text-decoration: none;
}

.kttk-skip-link:focus {
  top: var(--space-2);
}


/* ================================================================
   SECTION 5: COMPONENT STYLES
   BEM with .kttk- prefix
   ================================================================ */

/* ----- Navigation ----- */

.kttk-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height-mobile);
  background: var(--nav-bg);
  border-bottom: var(--nav-border);
  z-index: var(--nav-z);
  transition: background var(--duration-normal) var(--ease-default);
}

.kttk-nav--scrolled {
  background: var(--nav-bg-scrolled);
}

.kttk-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--nav-padding-mobile);
}

.kttk-nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.kttk-nav__logo img {
  height: 32px;
  width: auto;
}

.kttk-nav__links {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

.kttk-nav__link {
  font-family: var(--nav-link-font);
  font-size: var(--nav-link-size);
  letter-spacing: var(--nav-link-tracking);
  color: var(--nav-link-color);
  text-transform: uppercase;
  text-decoration: none;
  padding-bottom: var(--space-1);
  border-bottom: 2px solid transparent;
  transition: var(--transition-color);
}

.kttk-nav__link:hover {
  color: var(--nav-link-color-hover);
}

.kttk-nav__link--active {
  color: var(--nav-link-color-active);
  border-bottom: var(--nav-active-border);
}

.kttk-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.kttk-nav__cart {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text-primary);
}

.kttk-nav__cart-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: var(--cart-badge-size);
  height: var(--cart-badge-size);
  background: var(--cart-badge-bg);
  color: var(--cart-badge-color);
  font-family: var(--cart-badge-font);
  font-size: var(--cart-badge-font-size);
  border-radius: var(--cart-badge-radius);
  display: flex;
  align-items: center;
  justify-content: center;
}


/* ----- Mobile Nav ----- */

.kttk-mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--mobile-nav-bg);
  z-index: var(--mobile-nav-z);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-moderate) var(--ease-out),
              visibility var(--duration-moderate) var(--ease-out);
}

.kttk-mobile-nav--open {
  opacity: 1;
  visibility: visible;
}

.kttk-mobile-nav__link {
  display: block;
  font-family: var(--mobile-nav-link-font);
  font-size: var(--mobile-nav-link-size);
  line-height: var(--mobile-nav-link-height);
  color: var(--color-text-primary);
  text-transform: uppercase;
  text-decoration: none;
  text-align: center;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--mobile-nav-link-gap);
  transition: var(--transition-color);
}

.kttk-mobile-nav__link:hover {
  color: var(--color-accent-primary);
}


/* ----- Hamburger ----- */

.kttk-hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  gap: 6px;
}

.kttk-hamburger__line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--duration-moderate) var(--ease-default),
              opacity var(--duration-moderate) var(--ease-default);
  transform-origin: center;
}

.kttk-hamburger--active .kttk-hamburger__line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.kttk-hamburger--active .kttk-hamburger__line:nth-child(2) {
  opacity: 0;
}

.kttk-hamburger--active .kttk-hamburger__line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}


/* ----- Buttons ----- */

.kttk-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--button-height);
  font-family: var(--button-font);
  font-size: var(--button-size);
  letter-spacing: var(--button-tracking);
  border-radius: var(--button-radius);
  padding: 0 var(--button-padding-x);
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: var(--transition-color);
}

.kttk-button--primary {
  background: var(--button-primary-bg);
  color: var(--button-primary-text);
}

.kttk-button--primary:hover {
  background: var(--button-primary-bg-hover);
  box-shadow: var(--button-primary-glow-hover);
}

.kttk-button--primary:active {
  background: var(--button-primary-bg-active);
}

.kttk-button--ghost {
  background: var(--button-ghost-bg);
  color: var(--button-ghost-text);
  border: var(--button-ghost-border);
}

.kttk-button--ghost:hover {
  background: var(--button-ghost-bg-hover);
}

.kttk-button--disabled,
.kttk-button:disabled {
  background: var(--button-disabled-bg);
  color: var(--button-disabled-text);
  cursor: not-allowed;
  box-shadow: none;
}

.kttk-button--disabled:hover,
.kttk-button:disabled:hover {
  background: var(--button-disabled-bg);
  box-shadow: none;
}

.kttk-button--success {
  background: var(--button-success-bg);
  color: var(--color-surface-primary);
  box-shadow: var(--button-success-glow);
}


/* ----- Product Card ----- */

.kttk-product-card {
  position: relative;
  background: var(--card-bg);
  border: var(--card-border);
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: var(--transition-card);
}

.kttk-product-card:hover {
  transform: translateY(var(--card-hover-lift));
  box-shadow: var(--card-hover-glow);
  border: var(--card-border-hover);
}

.kttk-product-card__image {
  position: relative;
  aspect-ratio: var(--card-image-aspect);
  background: var(--card-image-bg);
  overflow: hidden;
}

.kttk-product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kttk-product-card__body {
  padding: var(--card-padding);
}

.kttk-product-card__name {
  font-family: var(--card-name-font);
  font-size: var(--card-name-size);
  color: var(--card-name-color);
  text-transform: uppercase;
  letter-spacing: var(--tracking-normal);
  margin-bottom: var(--space-2);
}

.kttk-product-card__price {
  font-family: var(--card-price-font);
  font-size: var(--card-price-size);
  color: var(--card-price-color);
  margin-bottom: var(--space-3);
}

.kttk-product-card__cta {
  height: var(--card-cta-height);
  width: 100%;
}

.kttk-product-card--sold-out .kttk-product-card__image::after {
  content: "SOLD OUT";
  position: absolute;
  inset: 0;
  background: var(--card-sold-out-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  letter-spacing: var(--tracking-widest);
  color: var(--color-text-primary);
  text-transform: uppercase;
}


/* ----- Badge ----- */

.kttk-badge {
  position: absolute;
  top: var(--badge-position-top);
  right: var(--badge-position-right);
  font-family: var(--badge-font);
  font-size: var(--badge-size);
  letter-spacing: var(--badge-tracking);
  padding: var(--badge-padding);
  border-radius: var(--badge-radius);
  text-transform: uppercase;
  z-index: var(--z-card);
}

.kttk-badge--new {
  background: var(--badge-new-bg);
  color: var(--badge-new-color);
  border: var(--badge-new-border);
}

.kttk-badge--limited {
  background: var(--badge-limited-bg);
  color: var(--badge-limited-color);
  border: var(--badge-limited-border);
}

.kttk-badge--sold-out {
  background: var(--badge-sold-out-bg);
  color: var(--badge-sold-out-color);
  border: var(--badge-sold-out-border);
}

.kttk-badge--best-value {
  background: var(--badge-best-value-bg);
  color: var(--badge-best-value-color);
  border: var(--badge-best-value-border);
}

.kttk-badge--founding {
  background: var(--badge-founding-bg);
  color: var(--badge-founding-color);
  border: var(--badge-founding-border);
}


/* ----- Limited Edition Counter ----- */

.kttk-limited-counter {
  display: inline-block;
  margin: var(--space-3) 0;
  padding: var(--space-2) var(--space-3);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid var(--color-accent-secondary);
  border-radius: 0;
}

.kttk-limited-counter__sold,
.kttk-limited-counter__remaining {
  color: var(--color-accent-secondary);
  font-weight: 700;
}

.kttk-limited-counter__sep {
  opacity: 0.4;
  margin: 0 var(--space-1);
}


/* ----- Tier Card ----- */

.kttk-tier-card {
  background: var(--tier-bg);
  border: var(--tier-border);
  padding: var(--tier-padding);
  position: relative;
}

.kttk-tier-card--anchor {
  border: var(--tier-border-anchor);
  box-shadow: var(--tier-anchor-glow);
  transform: scale(var(--tier-anchor-scale));
}

.kttk-tier-card__name {
  font-family: var(--tier-name-font);
  font-size: var(--tier-name-size);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-2);
}

.kttk-tier-card__price {
  font-family: var(--tier-price-font);
  font-size: var(--tier-price-size);
  color: var(--tier-price-color);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.kttk-tier-card__price-period {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.kttk-tier-card__features {
  list-style: none;
  margin-bottom: var(--space-6);
}

.kttk-tier-card__feature {
  font-family: var(--tier-feature-font);
  font-size: var(--tier-feature-size);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
  line-height: var(--leading-normal);
}

.kttk-tier-card__feature::before {
  content: "> ";
  color: var(--tier-feature-prefix-color);
}


/* ----- Filter Pill ----- */

.kttk-filter-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--pill-height);
  padding: 0 var(--pill-padding-x);
  border-radius: var(--pill-radius);
  font-family: var(--pill-font);
  font-size: var(--pill-size);
  background: var(--pill-bg);
  color: var(--pill-color);
  border: var(--pill-border);
  cursor: pointer;
  transition: var(--transition-color);
  text-decoration: none;
}

.kttk-filter-pill:hover {
  color: var(--pill-color-hover);
  border: var(--pill-border-hover);
}

.kttk-filter-pill--active {
  background: var(--pill-bg-active);
  color: var(--pill-color-active);
  border: var(--pill-border-active);
}


/* ----- Size Selector ----- */

.kttk-size-pill {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--size-pill-dimension);
  height: var(--size-pill-dimension);
  border-radius: var(--size-pill-radius);
  background: var(--size-pill-bg);
  color: var(--size-pill-color);
  border: var(--size-pill-border);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  transition: var(--transition-color);
}

.kttk-size-pill:hover {
  border: var(--size-pill-border-hover);
}

.kttk-size-pill--selected {
  background: var(--size-pill-bg-selected);
  border: var(--size-pill-border-selected);
}

.kttk-size-pill--unavailable {
  color: var(--size-pill-color-unavailable);
  border: var(--size-pill-border-unavailable);
  cursor: not-allowed;
  text-decoration: line-through;
}


/* ----- Input ----- */

.kttk-input {
  background: var(--input-bg);
  border: var(--input-border);
  color: var(--input-text);
  font-family: var(--input-font);
  font-size: var(--input-size);
  height: var(--input-height);
  padding: var(--input-padding);
  border-radius: var(--input-radius);
  width: 100%;
  transition: border-color var(--duration-normal) var(--ease-default);
}

.kttk-input:focus {
  border: var(--input-border-focus);
  outline: none;
}

.kttk-input::placeholder {
  color: var(--input-placeholder);
}

.kttk-input-label {
  display: block;
  color: var(--input-label-color);
  font-family: var(--input-label-font);
  font-size: var(--input-label-size);
  margin-bottom: var(--space-2);
}


/* ----- Hero ----- */

.kttk-hero {
  min-height: var(--hero-min-height);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: var(--space-16) var(--space-4);
}

.kttk-hero__logo {
  width: var(--hero-logo-width);
  margin-bottom: var(--space-6);
  filter: var(--hero-logo-glow);
}

.kttk-hero__tagline {
  font-family: var(--hero-tagline-font);
  font-size: var(--hero-tagline-size);
  color: var(--hero-tagline-color);
  letter-spacing: var(--tracking-normal);
  margin-bottom: var(--space-8);
  max-width: 600px;
}

.kttk-hero__cta-group {
  display: flex;
  gap: var(--hero-cta-gap);
  flex-wrap: wrap;
  justify-content: center;
}

.kttk-hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  opacity: var(--hero-scroll-indicator-opacity);
  animation: float 2s ease-in-out infinite;
  color: var(--color-text-primary);
}


/* ----- Email Capture ----- */

.kttk-email-capture {
  max-width: var(--email-max-width);
  margin: 0 auto;
  padding: var(--email-padding);
}

.kttk-email-capture__heading {
  font-family: var(--email-heading-font);
  font-size: var(--email-heading-size);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  text-align: center;
  margin-bottom: var(--space-6);
}

.kttk-email-capture__input-wrap {
  display: flex;
  align-items: center;
  background: var(--color-surface-secondary);
  border: var(--email-border);
  border-radius: var(--email-radius);
  padding: var(--space-2) var(--space-3);
}

.kttk-email-capture__prompt {
  color: var(--color-accent-primary);
  font-family: var(--font-body);
  margin-right: var(--space-2);
  flex-shrink: 0;
}

.kttk-email-capture__input {
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  flex: 1;
  outline: none;
}

.kttk-email-capture__cursor {
  width: 2px;
  height: 1em;
  background: var(--color-accent-primary);
  animation: blink 1s step-end infinite;
}

.kttk-email-capture__submit {
  margin-top: var(--space-3);
  width: 100%;
}

.kttk-email-capture__feedback {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  margin-top: var(--space-2);
}

.kttk-email-capture__feedback--success {
  color: var(--email-status-success);
}

.kttk-email-capture__feedback--error {
  color: var(--email-status-error);
}

.kttk-email-capture__consent {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-2);
  text-align: center;
}


/* ----- Brand Pillars ----- */

.kttk-pillars {
  display: grid;
  gap: var(--pillar-gap-mobile);
}

.kttk-pillars__item {
  text-align: center;
}

.kttk-pillars__icon {
  font-size: var(--pillar-icon-size);
  color: var(--pillar-icon-color);
  margin-bottom: var(--space-4);
}

.kttk-pillars__title {
  font-family: var(--pillar-title-font);
  font-size: var(--pillar-title-size);
  color: var(--pillar-title-color);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-3);
}

.kttk-pillars__desc {
  font-family: var(--pillar-desc-font);
  font-size: var(--pillar-desc-size);
  color: var(--pillar-desc-color);
  line-height: var(--pillar-desc-leading);
}


/* ----- Gallery ----- */

.kttk-gallery__main {
  border-radius: var(--gallery-main-radius);
  background: var(--gallery-main-bg);
  overflow: hidden;
  aspect-ratio: 1 / 1;
}

.kttk-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kttk-gallery__thumbs {
  display: flex;
  gap: var(--gallery-thumb-gap);
  margin-top: var(--space-3);
}

.kttk-gallery__thumb {
  width: var(--gallery-thumb-size);
  height: var(--gallery-thumb-size);
  border: var(--gallery-thumb-border);
  cursor: pointer;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.kttk-gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kttk-gallery__thumb--active {
  border: var(--gallery-thumb-border-active);
}


/* ----- Accordion ----- */

.kttk-accordion {
  border-bottom: var(--accordion-border);
}

.kttk-accordion__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--accordion-header-padding);
  font-family: var(--accordion-header-font);
  font-size: var(--accordion-header-size);
  color: var(--accordion-header-color);
  cursor: pointer;
  width: 100%;
  background: transparent;
  border: none;
  text-align: left;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.kttk-accordion__prefix {
  color: var(--accordion-prefix-color);
  margin-right: var(--space-2);
}

.kttk-accordion__chevron {
  width: var(--accordion-chevron-size);
  height: var(--accordion-chevron-size);
  transition: transform var(--duration-normal) var(--ease-default);
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

.kttk-accordion__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-moderate) var(--ease-out);
  padding: var(--accordion-content-padding);
  font-family: var(--accordion-content-font);
  font-size: var(--accordion-content-size);
  color: var(--accordion-content-color);
  line-height: var(--accordion-content-leading);
}

.kttk-accordion--open .kttk-accordion__chevron {
  transform: rotate(180deg);
}

.kttk-accordion--open .kttk-accordion__content {
  max-height: 500px;
}


/* ----- Breadcrumb ----- */

.kttk-breadcrumb {
  font-family: var(--breadcrumb-font);
  font-size: var(--breadcrumb-size);
  color: var(--breadcrumb-color);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.kttk-breadcrumb__item {
  display: inline-flex;
  align-items: center;
}

.kttk-breadcrumb__item::after {
  content: var(--breadcrumb-separator);
  margin-left: var(--space-2);
  color: var(--breadcrumb-color);
}

.kttk-breadcrumb__item:last-child::after {
  content: none;
}

.kttk-breadcrumb__item:last-child {
  color: var(--breadcrumb-color-active);
}

.kttk-breadcrumb__link {
  color: var(--breadcrumb-color);
  text-decoration: none;
}

.kttk-breadcrumb__link:hover {
  color: var(--color-accent-primary);
}


/* ----- Countdown ----- */

.kttk-countdown {
  font-family: var(--countdown-font);
  font-size: var(--countdown-size);
  color: var(--countdown-color);
  letter-spacing: var(--countdown-tracking);
  text-transform: uppercase;
}


/* ----- Founding Bar ----- */

.kttk-founding-bar {
  font-family: var(--founding-font);
  border: var(--founding-border);
  padding: var(--founding-padding);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.kttk-founding-bar__count {
  color: var(--founding-count-color);
  font-weight: var(--font-weight-bold);
}


/* ----- Guarantee ----- */

.kttk-guarantee {
  background: var(--guarantee-bg);
  border: var(--guarantee-border);
  padding: var(--guarantee-padding);
  text-align: center;
}

.kttk-guarantee__icon {
  font-size: var(--guarantee-icon-size);
  margin-bottom: var(--space-4);
}

.kttk-guarantee__text {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}


/* ----- Sticky Bar ----- */

.kttk-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--sticky-bar-bg);
  border-top: var(--sticky-bar-border);
  padding: var(--sticky-bar-padding);
  z-index: var(--sticky-bar-z);
  display: none;
}

.kttk-sticky-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.kttk-sticky-bar__price {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
}

.kttk-sticky-bar__cta {
  height: var(--sticky-bar-cta-height);
  flex: 1;
  max-width: 300px;
}


/* ----- Footer ----- */

.kttk-footer {
  background: var(--footer-bg);
  border-top: var(--footer-border);
  padding: var(--footer-padding);
}

.kttk-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.kttk-footer__heading {
  font-family: var(--footer-heading-font);
  font-size: var(--footer-heading-size);
  color: var(--footer-heading-color);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-4);
}

.kttk-footer__link {
  display: block;
  color: var(--footer-link-color);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-2);
  text-decoration: none;
  transition: var(--transition-color);
}

.kttk-footer__link:hover {
  color: var(--footer-link-color-hover);
}

.kttk-footer__tagline {
  font-family: var(--footer-tagline-font);
  font-size: var(--footer-tagline-size);
  color: var(--footer-tagline-color);
  margin-top: var(--space-8);
  text-align: center;
}

.kttk-footer__bottom {
  padding-bottom: var(--footer-padding-bottom-mobile);
}


/* ----- Skeleton ----- */

.kttk-skeleton {
  background: var(--skeleton-bg);
  border-radius: var(--skeleton-radius);
  animation: shimmer 1.5s infinite;
  position: relative;
  overflow: hidden;
}

.kttk-skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--skeleton-shine) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: shimmer 1.5s infinite;
}


/* ----- Toast ----- */

.kttk-toast {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  background: var(--toast-bg);
  font-family: var(--toast-font);
  font-size: var(--toast-size);
  color: var(--toast-color);
  padding: var(--toast-padding);
  z-index: var(--toast-z);
  border-left: var(--toast-border-width) solid;
  max-width: 360px;
  animation: slide-up var(--duration-moderate) var(--ease-out);
}

.kttk-toast--success {
  border-color: var(--toast-border-success);
}

.kttk-toast--error {
  border-color: var(--toast-border-error);
}

.kttk-toast--info {
  border-color: var(--toast-border-info);
}


/* ----- Featured Strip ----- */

.kttk-featured__heading {
  font-family: var(--featured-heading-font);
  font-size: var(--featured-heading-size);
  color: var(--featured-heading-color);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-6);
}

.kttk-featured__prefix {
  color: var(--featured-prefix-color);
}


/* ----- Subscription CTA Block ----- */

.kttk-sub-cta {
  background: var(--sub-cta-bg);
  padding: var(--sub-cta-padding);
  text-align: center;
}

.kttk-sub-cta__inner {
  max-width: var(--sub-cta-max-width);
  margin: 0 auto;
}


/* ----- Product Detail ----- */

.kttk-product-detail__name {
  font-family: var(--detail-name-font);
  font-size: var(--detail-name-size);
  color: var(--detail-name-color);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-3);
}

.kttk-product-detail__price {
  font-family: var(--detail-price-font);
  font-size: var(--detail-price-size);
  color: var(--detail-price-color);
  margin-bottom: var(--space-4);
}

.kttk-product-detail__desc {
  font-family: var(--detail-desc-font);
  font-size: var(--detail-desc-size);
  color: var(--detail-desc-color);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.kttk-product-detail__stock {
  font-family: var(--detail-stock-font);
  font-size: var(--detail-stock-size);
  color: var(--detail-stock-color);
  letter-spacing: var(--detail-stock-tracking);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}


/* ----- Quantity Stepper ----- */

.kttk-qty-stepper {
  display: flex;
  align-items: center;
  border: var(--qty-border);
}

.kttk-qty-stepper__button {
  width: var(--qty-button-size);
  height: var(--qty-button-size);
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--font-size-lg);
  cursor: pointer;
  transition: var(--transition-color);
}

.kttk-qty-stepper__button:hover {
  color: var(--color-accent-primary);
}

.kttk-qty-stepper__value {
  font-family: var(--qty-font);
  font-size: var(--qty-size);
  color: var(--color-text-primary);
  min-width: var(--qty-button-size);
  text-align: center;
}


/* ----- Select (Sort Dropdown) ----- */

.kttk-select {
  background: var(--select-bg);
  border: var(--select-border);
  color: var(--select-text);
  font-family: var(--select-font);
  font-size: var(--font-size-base);
  height: var(--input-height);
  padding: var(--input-padding);
  border-radius: var(--input-radius);
  appearance: none;
  cursor: pointer;
}


/* ----- Filter Bottom Sheet (Mobile) ----- */

.kttk-bottom-sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bottom-sheet-bg);
  border: var(--bottom-sheet-border);
  border-radius: var(--bottom-sheet-radius);
  padding: var(--bottom-sheet-padding);
  z-index: var(--bottom-sheet-z);
  transform: translateY(100%);
  transition: var(--transition-slide);
}

.kttk-bottom-sheet--open {
  transform: translateY(0);
}

.kttk-bottom-sheet__handle {
  width: var(--bottom-sheet-handle-width);
  height: var(--bottom-sheet-handle-height);
  background: var(--bottom-sheet-handle-bg);
  border-radius: var(--radius-pill);
  margin: 0 auto var(--space-4);
}


/* ================================================================
   SECTION 6: SNIPCART OVERRIDES
   ================================================================ */

.snipcart-modal__container {
  background: var(--color-surface-primary) !important;
}

.snipcart-cart__content {
  background: var(--color-surface-primary) !important;
  color: var(--color-text-primary) !important;
}

.snipcart-item-line {
  border-color: var(--color-border-default) !important;
}

.snipcart__font--secondary,
.snipcart__font--subtitle {
  color: var(--color-text-secondary) !important;
}

.snipcart-button-primary {
  background: var(--color-accent-primary) !important;
  color: var(--color-text-on-accent) !important;
}

.snipcart-button-primary:hover {
  background: var(--color-accent-hover) !important;
}

.snipcart-form__input {
  background: var(--color-surface-elevated) !important;
  color: var(--color-text-primary) !important;
  border-color: var(--color-border-interactive) !important;
}

.snipcart-form__label {
  color: var(--color-text-secondary) !important;
}

.snipcart-discount-box__button {
  background: var(--color-accent-primary) !important;
}

.snipcart-cart-header {
  background: var(--color-surface-primary) !important;
}

.snipcart-cart-header__title {
  color: var(--color-text-primary) !important;
}

.snipcart-cart-header__close-button {
  color: var(--color-text-primary) !important;
}


/* ================================================================
   SECTION 7: KEYFRAME ANIMATIONS
   ================================================================ */

/* --- Blink (cursor) --- */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* --- Glitch --- */
@keyframes glitch {
  0% {
    clip-path: inset(40% 0 61% 0);
    transform: translate(var(--glitch-offset), calc(var(--glitch-offset) * -1));
  }
  20% {
    clip-path: inset(92% 0 1% 0);
    transform: translate(calc(var(--glitch-offset) * -1), var(--glitch-offset));
  }
  40% {
    clip-path: inset(43% 0 1% 0);
    transform: translate(var(--glitch-offset), var(--glitch-offset));
  }
  60% {
    clip-path: inset(25% 0 58% 0);
    transform: translate(calc(var(--glitch-offset) * -1), calc(var(--glitch-offset) * -1));
  }
  80% {
    clip-path: inset(54% 0 7% 0);
    transform: translate(var(--glitch-offset), calc(var(--glitch-offset) * -1));
  }
  100% {
    clip-path: inset(58% 0 43% 0);
    transform: translate(calc(var(--glitch-offset) * -1), var(--glitch-offset));
  }
}

/* --- Shimmer (skeleton loading) --- */
@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* --- Glow Pulse --- */
@keyframes glow-pulse {
  0%, 100% {
    box-shadow: var(--shadow-glow-subtle);
  }
  50% {
    box-shadow: var(--shadow-glow-medium);
  }
}

/* --- Float --- */
@keyframes float {
  0%, 100% {
    transform: translateY(0) translateX(-50%);
  }
  50% {
    transform: translateY(-4px) translateX(-50%);
  }
}

/* --- Scanline Sweep --- */
@keyframes scanline-sweep {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(100%);
  }
}

/* --- Fade In --- */
@keyframes fade-in {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Slide Up --- */
@keyframes slide-up {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}


/* ----- Scroll-triggered visibility ----- */

.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.kttk-fade-in {
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition-fade), transform var(--duration-moderate) var(--ease-out);
}

.kttk-fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}


/* ----- Glitch Text ----- */

.kttk-glitch {
  position: relative;
  display: inline-block;
}

.kttk-glitch::before,
.kttk-glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.kttk-glitch::before {
  color: var(--glitch-color-r);
  clip-path: inset(0 0 65% 0);
  transform: translate(var(--glitch-offset), calc(var(--glitch-offset) * -1));
  animation: glitch var(--glitch-duration) var(--glitch-timing) infinite alternate-reverse;
}

.kttk-glitch::after {
  color: var(--glitch-color-c);
  clip-path: inset(65% 0 0 0);
  transform: translate(calc(var(--glitch-offset) * -1), var(--glitch-offset));
  animation: glitch var(--glitch-duration) var(--glitch-timing) infinite alternate;
}


/* ----- Scanline Overlay ----- */

.kttk-scanline::after {
  content: "";
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent var(--scanline-line-gap),
    rgba(0, 0, 0, 0.15) var(--scanline-line-gap),
    rgba(0, 0, 0, 0.15) calc(var(--scanline-line-gap) + var(--scanline-line-width))
  );
  opacity: var(--scanline-opacity);
  pointer-events: none;
  z-index: var(--scanline-z);
}


/* ----- Noise Overlay ----- */

.kttk-noise::before {
  content: "";
  position: fixed;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: var(--noise-opacity);
  mix-blend-mode: var(--noise-blend);
  pointer-events: none;
  z-index: var(--noise-z);
}


/* ================================================================
   SECTION 8: MEDIA QUERIES
   ================================================================ */

/* ----- Tablet (768px+) ----- */

@media (min-width: 768px) {
  .kttk-container {
    padding: 0 var(--container-padding-tablet);
  }

  .kttk-grid {
    grid-template-columns: repeat(var(--grid-columns-tablet), 1fr);
    gap: var(--grid-gap-tablet);
  }

  .kttk-nav {
    height: var(--nav-height);
  }

  .kttk-nav__inner {
    padding: 0 var(--nav-padding-desktop);
  }

  .kttk-hamburger {
    display: none;
  }

  .kttk-nav__links {
    display: flex;
  }

  .kttk-footer__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .kttk-footer__bottom {
    padding-bottom: 0;
  }

  .kttk-pillars {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--pillar-gap-desktop);
  }

  .kttk-hero__tagline {
    font-size: var(--font-size-xl);
  }

  .kttk-product-card__body {
    padding: var(--card-padding);
  }

  .kttk-tier-card--anchor {
    transform: scale(1.02);
  }
}


/* ----- Desktop (1280px+) ----- */

@media (min-width: 1280px) {
  .kttk-container {
    padding: 0 var(--container-padding-desktop);
  }

  .kttk-grid {
    grid-template-columns: repeat(var(--grid-columns-desktop), 1fr);
    gap: var(--grid-gap-desktop);
  }

  .kttk-footer__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}


/* ----- Reduced Motion ----- */

@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-fast: 0.01ms;
    --duration-normal: 0.01ms;
    --duration-moderate: 0.01ms;
    --duration-slow: 0.01ms;
    --duration-dramatic: 0.01ms;
    --duration-typing: 0.01ms;
    --duration-glow-cycle: 0.01ms;
    --duration-success-revert: 0.01ms;

    --card-hover-lift: 0;
    --hero-logo-glow: drop-shadow(0 0 20px rgba(255, 0, 51, 0.6));
    --hero-logo-glow-peak: drop-shadow(0 0 20px rgba(255, 0, 51, 0.6));
    --hero-scroll-indicator-opacity: 0;
    --scanline-opacity: 0;
    --noise-opacity: 0;
    --chromatic-offset: 0px;
    --chromatic-shadow: none;
    --glitch-offset: 0px;

    --shadow-glow-subtle: none;
    --shadow-glow-medium: none;
    --shadow-glow-intense: none;

    --transition-hover: none;
    --transition-color: none;
    --transition-fade: none;
    --transition-slide: none;
    --transition-card: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}


/* ----- High Contrast ----- */

@media (prefers-contrast: more) {
  :root {
    --color-surface-primary: #000000;
    --color-surface-secondary: #000000;
    --color-surface-elevated: #1A1A1A;
    --color-surface-sunken: #000000;

    --color-text-primary: #FFFFFF;
    --color-text-secondary: #FFFFFF;
    --color-text-tertiary: #CCCCCC;
    --color-text-disabled: #999999;
    --color-text-on-accent: #FFFFFF;

    --color-accent-primary: #FF3333;
    --color-accent-hover: #FF6666;
    --color-accent-active: #CC0029;

    --color-border-default: #FFFFFF;
    --color-border-subtle: rgba(255, 255, 255, 0.3);
    --color-border-interactive: #FFFFFF;
    --color-border-hover: #FFFFFF;

    --border-default: 2px solid var(--color-border-default);
    --border-subtle: 1px solid var(--color-border-subtle);
    --border-interactive: 2px solid var(--color-border-interactive);
    --border-focus: 3px solid var(--color-border-focus);

    --focus-ring-width: 3px;
  }
}