/*
 * Shared design tokens and site chrome
 */

/* ========================================
   CSS Custom Properties - Core Design Tokens
   ======================================== */

:root {
  /* === Color Palette === */

  /* Primary - Deep forest backgrounds (Home page default) */
  --color-bg-primary: #0a0c0a;
  --color-bg-secondary: #10130f;
  --color-bg-tertiary: #161a14;
  --color-bg-elevated: #1c2118;

  /* Surface colors (Home page default - green undertone) */
  --color-surface: #141812;
  --color-surface-hover: #1a1f17;
  --color-surface-active: #20261c;

  /* Text hierarchy - warm parchment tones */
  --color-text-primary: #f5f0e8;
  --color-text-secondary: #a8a090;
  --color-text-tertiary: #78725e;
  --color-text-muted: #5a5545;

  /* Accent - Forest green */
  --color-accent: #173B34;
  --color-accent-hover: #2A6356;
  --color-accent-muted: #0F2A24;
  --color-accent-subtle: rgba(23, 59, 52, 0.2);

  /* Secondary accents */
  --color-accent-warm: #2A6356;
  --color-accent-cool: #173B34;
  --color-accent-neutral: #1E4F44;

  /* Borders and dividers - warm tinted */
  --color-border: rgba(245, 240, 232, 0.06);
  --color-border-subtle: rgba(245, 240, 232, 0.03);
  --color-border-emphasis: rgba(245, 240, 232, 0.12);
  --color-border-glass: rgba(255, 255, 255, 0.08);

  /* Gradients - forest green transitions */
  --gradient-subtle: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
  --gradient-accent: linear-gradient(135deg, #2A6356 0%, #173B34 50%, #1E4F44 100%);
  --gradient-warm: linear-gradient(135deg, #2A6356 0%, #173B34 100%);
  --gradient-mesh: radial-gradient(at 40% 20%, rgba(23, 59, 52, 0.15) 0px, transparent 50%),
    radial-gradient(at 80% 0%, rgba(42, 99, 86, 0.1) 0px, transparent 50%),
    radial-gradient(at 0% 50%, rgba(30, 79, 68, 0.08) 0px, transparent 50%);

  /* === Typography === */

  /* Font families */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Font sizes - Fluid typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.75rem + 0.3vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.875rem + 0.3vw, 1rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.3vw, 1.125rem);
  --text-xl: clamp(1.1875rem, 1.1rem + 0.4vw, 1.25rem);
  --text-2xl: clamp(1.375rem, 1.25rem + 0.6vw, 1.5rem);
  --text-3xl: clamp(1.75rem, 1.5rem + 1.2vw, 2rem);
  --text-4xl: clamp(2.5rem, 2rem + 2.5vw, 3.25rem);
  --text-5xl: clamp(3rem, 2.5rem + 4vw, 4.5rem);
  --text-6xl: clamp(4rem, 3rem + 6vw, 6.5rem);

  /* Agency/Brutalist Typography */
  --text-hero: clamp(4rem, 8vw, 10rem);
  --text-hero-lg: clamp(5rem, 12vw, 14rem);

  /* Line heights */
  --leading-none: 0.95;
  --leading-tight: 1.1;
  --leading-snug: 1.3;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

  /* Letter spacing */
  --tracking-tighter: -0.04em;
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.02em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* Font weights */
  --weight-light: 300;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* === Spacing === */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* === Border Radius === */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  --radius-nav: 0.5rem;

  /* === Shadows === */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -2px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -4px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7), 0 8px 10px -6px rgba(0, 0, 0, 0.6);
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --shadow-glow: 0 0 20px rgba(23, 59, 52, 0.4);
  --shadow-glow-lg: 0 0 40px rgba(23, 59, 52, 0.5);

  /* === Transitions === */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 400ms;
  --duration-slower: 600ms;

  /* === Z-Index Scale === */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
  --flashlight-radius: clamp(54px, 8vmin, 96px);
  --flashlight-feather: clamp(104px, 18vmin, 210px);
  --flashlight-scrim-opacity: 0.998;
  --flashlight-beam-opacity: 1;
  --flashlight-flicker: 1;
  --flashlight-cover-opacity: 0;
  --flashlight-power: 100%;
  --flashlight-layer-z: 12000;

  /* === Layout === */
  --nav-height: 80px;
}

/* ========================================
   Theme Variations
   ======================================== */

/* Gallery Theme - Moody, dramatic, curved (#9693CC lavender) */
[data-theme="gallery"] {
  --color-bg-primary: #08080c;
  --color-bg-secondary: #0e0e14;
  --color-bg-tertiary: #15151e;
  --color-bg-elevated: #1c1c26;
  --color-surface: #121218;
  --color-surface-hover: #18181f;
  --color-surface-active: #1e1e26;
  --color-accent: #9693CC;
  --color-accent-hover: #B0ADDA;
  --color-accent-muted: #7A77AE;
  --color-accent-subtle: rgba(150, 147, 204, 0.1);
  --shadow-glow: 0 0 20px rgba(150, 147, 204, 0.15);
  --shadow-glow-lg: 0 0 40px rgba(150, 147, 204, 0.2);
  --gradient-accent: linear-gradient(135deg, #B0ADDA 0%, #9693CC 50%, #7A77AE 100%);
  --gradient-subtle: linear-gradient(135deg, #0e0e14 0%, #08080c 100%);
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;
  --radius-2xl: 2.5rem;
}

/* Archive Theme - Rigid, academic, structured (#CDDBCD sage) */
[data-theme="archive"] {
  --color-bg-primary: #0a0c0a;
  --color-bg-secondary: #0f120f;
  --color-bg-tertiary: #151a15;
  --color-bg-elevated: #1b211b;
  --color-surface: #121612;
  --color-surface-hover: #181e18;
  --color-surface-active: #1e241e;
  --color-accent: #CDDBCD;
  --color-accent-hover: #DDE8DD;
  --color-accent-muted: #A8BCA8;
  --color-accent-subtle: rgba(205, 219, 205, 0.08);
  --shadow-glow: 0 0 20px rgba(205, 219, 205, 0.12);
  --shadow-glow-lg: 0 0 40px rgba(205, 219, 205, 0.15);
  --gradient-accent: linear-gradient(135deg, #DDE8DD 0%, #CDDBCD 50%, #A8BCA8 100%);
  --gradient-subtle: linear-gradient(135deg, #0f120f 0%, #0a0c0a 100%);
  --radius-sm: 0.125rem;
  --radius-md: 0.25rem;
  --radius-lg: 0.375rem;
  --radius-xl: 0.5rem;
}

/* Resume Theme - Professional, clean (#6C8FD5 blue) */
[data-theme="resume"] {
  --color-bg-primary: #0a0a0e;
  --color-bg-secondary: #0f0f16;
  --color-bg-tertiary: #14141e;
  --color-bg-elevated: #1a1a26;
  --color-surface: #121218;
  --color-surface-hover: #181820;
  --color-surface-active: #1e1e28;
  --color-accent: #6C8FD5;
  --color-accent-hover: #8AABE0;
  --color-accent-muted: #5472B0;
  --color-accent-subtle: rgba(108, 143, 213, 0.1);
  --color-accent-warm: #6C8FD5;
  --shadow-glow: 0 0 20px rgba(108, 143, 213, 0.15);
  --shadow-glow-lg: 0 0 40px rgba(108, 143, 213, 0.2);
  --gradient-accent: linear-gradient(135deg, #8AABE0 0%, #6C8FD5 50%, #5472B0 100%);
  --gradient-subtle: linear-gradient(135deg, #0f0f16 0%, #0a0a0e 100%);
}

/* Utilities Theme - Pure-black technical palette */
[data-theme="utilities"] {
  --font-display: 'JetBrains Mono', 'Fira Code', monospace;
  --color-bg-primary: #000000;
  --color-bg-secondary: #050505;
  --color-bg-tertiary: #0a0a0a;
  --color-bg-elevated: #111111;
  --color-surface: #080808;
  --color-surface-hover: #0e0e0e;
  --color-surface-active: #131313;
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-text-tertiary: #666666;
  --color-text-muted: #555555;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-subtle: rgba(255, 255, 255, 0.04);
  --color-border-emphasis: rgba(255, 255, 255, 0.14);
  --color-border-glass: rgba(255, 255, 255, 0.08);
  --color-accent: #ffffff;
  --color-accent-hover: #e0e0e0;
  --color-accent-muted: #888888;
  --color-accent-subtle: rgba(255, 255, 255, 0.1);
  --shadow-glow: 0 0 20px rgba(255, 255, 255, 0.1);
  --shadow-glow-lg: 0 0 40px rgba(255, 255, 255, 0.14);
  --gradient-accent: linear-gradient(135deg, #ffffff, #aaaaaa);
  --gradient-subtle: linear-gradient(135deg, #050505, #000000);
}

/* ========================================
   Starfield Background
   ======================================== */

#starfield {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  background: #000000;
  opacity: 0;
  animation: fade-in-stars 2s ease-in forwards;
}

html.skip-page-animation[data-page-id="utilities"] #starfield {
  animation: none;
  opacity: 1;
}

@keyframes fade-in-stars {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Global Light Mode */
html[data-color-mode="light"] {
  --color-bg-primary: #f3f0e7;
  --color-bg-secondary: #ece7d9;
  --color-bg-tertiary: #e2dccb;
  --color-bg-elevated: #faf7ef;

  --color-surface: #fcf9f1;
  --color-surface-hover: #f2ebdc;
  --color-surface-active: #e8dfce;

  --color-text-primary: #1e2722;
  --color-text-secondary: #495549;
  --color-text-tertiary: #657063;
  --color-text-muted: #7e897b;

  --color-accent: #245d52;
  --color-accent-hover: #1c4a42;
  --color-accent-muted: #3d7268;
  --color-accent-subtle: rgba(36, 93, 82, 0.12);

  --color-accent-warm: #245d52;
  --color-accent-cool: #245d52;
  --color-accent-neutral: #2f6a5f;

  --color-border: rgba(30, 39, 34, 0.14);
  --color-border-subtle: rgba(30, 39, 34, 0.08);
  --color-border-emphasis: rgba(30, 39, 34, 0.22);
  --color-border-glass: rgba(30, 39, 34, 0.16);

  --gradient-subtle: linear-gradient(135deg, #ece7d9 0%, #f7f3e8 100%);
  --gradient-accent: linear-gradient(135deg, #3d7268 0%, #245d52 55%, #1b4a42 100%);
  --gradient-warm: linear-gradient(135deg, #3d7268 0%, #245d52 100%);
  --gradient-mesh:
    radial-gradient(at 40% 20%, rgba(36, 93, 82, 0.14) 0px, transparent 52%),
    radial-gradient(at 80% 0%, rgba(61, 114, 104, 0.12) 0px, transparent 48%),
    radial-gradient(at 0% 50%, rgba(36, 93, 82, 0.1) 0px, transparent 50%);

  --shadow-sm: 0 1px 2px rgba(17, 23, 20, 0.08);
  --shadow-md: 0 4px 8px -2px rgba(17, 23, 20, 0.1), 0 2px 4px -2px rgba(17, 23, 20, 0.08);
  --shadow-lg: 0 10px 18px -6px rgba(17, 23, 20, 0.14), 0 4px 6px -4px rgba(17, 23, 20, 0.1);
  --shadow-xl: 0 18px 28px -10px rgba(17, 23, 20, 0.18), 0 10px 14px -10px rgba(17, 23, 20, 0.12);
  --shadow-glass: 0 16px 36px -18px rgba(17, 23, 20, 0.28);
  --shadow-glow: 0 0 20px rgba(36, 93, 82, 0.22);
  --shadow-glow-lg: 0 0 36px rgba(36, 93, 82, 0.26);
}

html[data-color-mode="light"][data-theme="gallery"] {
  --color-accent: #9693CC;
  --color-accent-hover: #7f7ab6;
  --color-accent-muted: #aaa7da;
  --color-accent-subtle: rgba(150, 147, 204, 0.15);
  --gradient-accent: linear-gradient(135deg, #c1bee6 0%, #9693CC 52%, #7f7ab6 100%);
}

html[data-color-mode="light"][data-theme="archive"] {
  --color-accent: #4f6753;
  --color-accent-hover: #3f5542;
  --color-accent-muted: #6b836f;
  --color-accent-subtle: rgba(79, 103, 83, 0.12);
  --gradient-accent: linear-gradient(135deg, #6b836f 0%, #4f6753 50%, #3f5542 100%);
}

html[data-color-mode="light"][data-theme="resume"] {
  --color-accent: #2f5cae;
  --color-accent-hover: #244a92;
  --color-accent-muted: #436fbe;
  --color-accent-subtle: rgba(47, 92, 174, 0.14);
  --gradient-accent: linear-gradient(135deg, #5f84cc 0%, #2f5cae 50%, #244a92 100%);
}

/* Light mode disabled on utilities page via data-disable-color-mode */
html[data-color-mode="light"][data-theme="utilities"] {
  /* Inert: utilities page forces dark mode; these tokens are unused. */
}

/* ========================================
   Base Reset & Defaults
   ======================================== */

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

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  color-scheme: dark;
}

html[data-color-mode="light"] {
  color-scheme: light;
}

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

/* Cursor pack is applied globally via css/cursor.css */

/* Selection styling */
::selection {
  background-color: var(--color-accent);
  color: white;
}

/* Scrollbar removed globally */
::-webkit-scrollbar {
  display: none;
}

html {
  scrollbar-width: none;
}

/* ========================================
   Typography Classes
   ======================================== */

.text-display {
  font-family: var(--font-display), serif;
  font-weight: var(--weight-normal);
  text-shadow: 0.012em 0 currentColor, -0.012em 0 currentColor;
  letter-spacing: var(--tracking-tighter);
  line-height: var(--leading-none);
}

.text-heading {
  font-family: var(--font-body), sans-serif;
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
}

.text-body {
  font-family: var(--font-body), sans-serif;
  font-weight: var(--weight-normal);
  line-height: var(--leading-relaxed);
}

.text-mono {
  font-family: var(--font-mono), monospace;
  font-size: 0.9em;
}

.text-gradient {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   Layout Utilities
   ======================================== */

.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-narrow {
  max-width: 900px;
}

.container-wide {
  width: 100%;
  max-width: 1800px;
  margin: 0 auto;
  padding: 0 var(--space-10);
}

.section {
  padding: clamp(var(--space-20), 10vw, var(--space-32)) 0;
}

.section-lg {
  padding: clamp(var(--space-24), 15vw, 240px) 0;
}

/* Flex utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-1 {
  gap: var(--space-1);
}

.gap-2 {
  gap: var(--space-2);
}

.gap-3 {
  gap: var(--space-3);
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

.gap-8 {
  gap: var(--space-8);
}

/* Grid utilities */
.grid {
  display: grid;
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

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

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

/* ========================================
   Component Base Styles
   ======================================== */

/* Page Hero */
.page-hero {
  position: relative;
  min-height: 50vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: calc(var(--nav-height) + var(--space-32)) 0 var(--space-12);
  background: var(--gradient-subtle);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

/* Cards */
.card {
  background: rgba(20, 24, 18, 0.4);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-glass);
  transition: all var(--duration-slow) var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.1), transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  /* NOTE: -webkit-mask-composite: xor is the WebKit equivalent of mask-composite: exclude.
     Rendering may differ slightly across WebKit versions (Safari < 15.4, older iOS).
     The @supports fallback below disables the pseudo-element entirely where mask-composite
     is unsupported, which also avoids the -webkit-mask-composite path in those browsers. */
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

@supports not (mask-composite: exclude) {
  .card::before {
    content: none;
  }
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(26, 31, 23, 0.6);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl), 0 0 20px rgba(255, 255, 255, 0.03);
}

.card-elevated {
  background: var(--color-bg-elevated);
  box-shadow: var(--shadow-md);
}

html[data-color-mode="light"] .card {
  background: #F7F8F6;
  border-color: #C7D1C4;
  background: color-mix(in srgb, white 88%, var(--color-surface) 12%);
  border-color: color-mix(in srgb, var(--color-border-emphasis) 72%, white 28%);
}

html[data-color-mode="light"] .card::before {
  background: linear-gradient(to bottom, rgba(17, 23, 20, 0.12), transparent);
}

html[data-color-mode="light"] .card:hover {
  border-color: #A7B99E;
  background: #F1F3EF;
  border-color: color-mix(in srgb, var(--color-accent) 28%, var(--color-border-emphasis));
  background: color-mix(in srgb, white 84%, var(--color-surface-hover) 16%);
  box-shadow: var(--shadow-xl), 0 0 16px rgba(17, 23, 20, 0.08);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body), sans-serif;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-decoration: none;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: all var(--duration-base) var(--ease-smooth);
}


.btn-primary {
  background: var(--color-accent);
  color: white;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--color-text-primary);
  border-color: var(--color-border-emphasis);
}

html[data-color-mode="light"] .btn-secondary {
  background: #F8F9F7;
  background: color-mix(in srgb, white 90%, var(--color-surface) 10%);
}

.btn-secondary:active {
  transform: scale(0.98);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-border-glass);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  color: var(--color-text-primary);
  background: var(--color-surface);
}

/* Links */
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-smooth);
}

a:hover {
  color: var(--color-accent-hover);
}

/* Dividers */
.divider {
  height: 1px;
  background: var(--color-border);
  border: none;
  margin: var(--space-8) 0;
}

.divider-vertical {
  width: 1px;
  height: 100%;
  background: var(--color-border);
}

/* Tags / Pills */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border-radius: var(--radius-full);
}

/* ========================================
   Animation Utilities
   ======================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

.animate-fade-in {
  animation: fadeIn var(--duration-slow) var(--ease-smooth) forwards;
}

.animate-fade-in-up {
  animation: fadeInUp var(--duration-slow) var(--ease-out-expo) forwards;
}

.animate-fade-in-down {
  animation: fadeInDown var(--duration-slow) var(--ease-out-expo) forwards;
}

.animate-scale-in {
  animation: scaleIn var(--duration-slow) var(--ease-bounce) forwards;
}

.animate-slide-in-right {
  animation: slideInRight var(--duration-slow) var(--ease-out-expo) forwards;
}

/* Staggered animations */
.stagger-1 {
  animation-delay: 0.1s;
}

.stagger-2 {
  animation-delay: 0.2s;
}

.stagger-3 {
  animation-delay: 0.3s;
}

.stagger-4 {
  animation-delay: 0.4s;
}

.stagger-5 {
  animation-delay: 0.5s;
}

/* Scroll-triggered animations */
[data-animate] {
  opacity: 0;
}

[data-animate].visible {
  opacity: 1;
}

[data-animate="fade-up"] {
  transform: translateY(30px);
  transition: opacity var(--duration-slower) var(--ease-out-expo),
    transform var(--duration-slower) var(--ease-out-expo);
}

[data-animate="fade-up"].visible {
  transform: translateY(0);
}

/* ========================================
   Custom Cursor — hidden legacy elements
   ======================================== */

/* cursor-dot and cursor-circle elements are no longer used;
   the retro arrow cursor is applied via native CSS cursor property */
.cursor-dot,
.cursor-circle {
  display: none;
}

/* ========================================
   Shared Navigation (Minimalist Header & Fullscreen Menu)
   ======================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: calc(var(--z-modal) + 2);
  padding: var(--space-6) 0;
  background: transparent;
  transition:
    background var(--duration-base) var(--ease-smooth),
    backdrop-filter var(--duration-base) var(--ease-smooth),
    -webkit-backdrop-filter var(--duration-base) var(--ease-smooth),
    border-bottom-color var(--duration-base) var(--ease-smooth);
}

body.nav-open {
  overflow: hidden;
}

body.nav-open .nav {
  pointer-events: none;
}

body.nav-open .nav .nav-logo,
body.nav-open .nav .nav-controls {
  pointer-events: auto;
}

body.nav-open .nav .nav-logo {
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
}

body.nav-open .nav.scrolled {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
}

.nav.scrolled {
  background: rgba(13, 15, 13, 0.85);
  background: color-mix(in srgb, var(--color-bg-primary) 85%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-controls {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  position: relative;
  z-index: calc(var(--z-modal) + 2);
}

.nav-logo {
  text-decoration: none;
  position: relative;
  z-index: calc(var(--z-modal) + 2);
  transition: opacity var(--duration-base) var(--ease-smooth), transform var(--duration-base) var(--ease-smooth);
}

.logo-text {
  font-family: var(--font-display), serif;
  font-size: var(--text-3xl);
  text-shadow: 0.01em 0 currentColor, -0.01em 0 currentColor;
  color: var(--color-text-primary);
}

.logo-text .logo-d {
  color: var(--color-accent);
}


/* minimal toggle button */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: none;
  border: none;
  position: relative;
  z-index: calc(var(--z-modal) + 2);
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text-primary);
  transition: all 0.4s cubic-bezier(0.7, 0, 0.2, 1);
}

.nav-toggle span:nth-child(1) {
  width: 40px;
}

.nav-toggle span:nth-child(2) {
  width: 28px;
}

.nav-toggle:hover span:nth-child(2) {
  width: 40px;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
  width: 40px;
}

.nav-toggle.active span:nth-child(2) {
  transform: translateY(-6px) rotate(-45deg);
  width: 40px;
}

/* Light/Dark mode toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: rgba(13, 15, 13, 0.84);
  background: color-mix(in srgb, var(--color-bg-primary) 84%, transparent);
  color: var(--color-text-secondary);
  transition: all var(--duration-base) var(--ease-smooth);
  cursor: pointer;
}

.nav-inner .theme-toggle {
  position: relative;
  z-index: calc(var(--z-modal) + 2);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  color: var(--color-text-primary);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-subtle);
}

.theme-toggle-icon {
  width: 20px;
  height: 20px;
  position: relative;
  pointer-events: none;
  display: block;
}

.theme-toggle-icon::before,
.theme-toggle-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  background: currentColor;
  transition: opacity var(--duration-base) var(--ease-smooth), transform var(--duration-base) var(--ease-smooth);
  transform-origin: center;
}

.theme-toggle-icon::before {
  -webkit-mask: url('../assets/light_mode/moon.svg') center / contain no-repeat;
  mask: url('../assets/light_mode/moon.svg') center / contain no-repeat;
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.theme-toggle-icon::after {
  -webkit-mask: url('../assets/light_mode/sun.svg') center / contain no-repeat;
  mask: url('../assets/light_mode/sun.svg') center / contain no-repeat;
  opacity: 0;
  transform: scale(0.86) rotate(-12deg);
}

.theme-toggle[data-mode="light"] .theme-toggle-icon::before {
  opacity: 0;
  transform: scale(0.84) rotate(10deg);
}

.theme-toggle[data-mode="light"] .theme-toggle-icon::after {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

html[data-color-mode="light"] .theme-toggle {
  background: #F8F9F7;
  background: color-mix(in srgb, white 88%, var(--color-bg-primary) 12%);
  color: var(--color-accent-muted);
}
/* Flashlight mode toggle + viewport mask */
.nav-actions .flashlight-toggle {
  position: relative;
  z-index: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: none;
  box-shadow: none;
  color: #000000;
  cursor: pointer;
  transition: transform 120ms ease, opacity 160ms ease, box-shadow var(--duration-base) var(--ease-smooth);
  flex: 0 0 auto;
}

.nav-actions .flashlight-toggle:hover {
  transform: scale(1.08);
  color: #000000;
  background: none;
  border-color: transparent;
  box-shadow: none;
  opacity: 0.76;
}

.nav-actions .flashlight-toggle:focus-visible {
  transform: scale(1.08);
  color: #000000;
  background: none;
  border-color: transparent;
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.14);
  opacity: 1;
}

.flashlight-toggle[data-mode="on"] .theme-toggle-icon::before {
  opacity: 0;
  transform: scale(0.84) rotate(10deg);
}

.flashlight-toggle[data-mode="on"] .theme-toggle-icon::after {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

body.flashlight-mode-active::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;

  z-index: var(--flashlight-layer-z);
  background-color: #000000;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 128 128' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='1.35' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' opacity='0.16' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 160px 160px;
  opacity: var(--flashlight-scrim-opacity);
  -webkit-mask-image: radial-gradient(
    circle at var(--flashlight-x, 50vw) var(--flashlight-y, 50vh),
    rgba(0, 0, 0, var(--flashlight-cover-opacity)) 0,
    rgba(0, 0, 0, var(--flashlight-cover-opacity)) var(--flashlight-radius),
    rgba(0, 0, 0, max(var(--flashlight-cover-opacity), 0.1)) calc(var(--flashlight-radius) + (var(--flashlight-feather) * 0.12)),
    rgba(0, 0, 0, max(var(--flashlight-cover-opacity), 0.34)) calc(var(--flashlight-radius) + (var(--flashlight-feather) * 0.3)),
    rgba(0, 0, 0, max(var(--flashlight-cover-opacity), 0.68)) calc(var(--flashlight-radius) + (var(--flashlight-feather) * 0.58)),
    rgba(0, 0, 0, max(var(--flashlight-cover-opacity), 0.92)) calc(var(--flashlight-radius) + (var(--flashlight-feather) * 0.82)),
    #000000 calc(var(--flashlight-radius) + var(--flashlight-feather))
  );
  mask-image: radial-gradient(
    circle at var(--flashlight-x, 50vw) var(--flashlight-y, 50vh),
    rgba(0, 0, 0, var(--flashlight-cover-opacity)) 0,
    rgba(0, 0, 0, var(--flashlight-cover-opacity)) var(--flashlight-radius),
    rgba(0, 0, 0, max(var(--flashlight-cover-opacity), 0.1)) calc(var(--flashlight-radius) + (var(--flashlight-feather) * 0.12)),
    rgba(0, 0, 0, max(var(--flashlight-cover-opacity), 0.34)) calc(var(--flashlight-radius) + (var(--flashlight-feather) * 0.3)),
    rgba(0, 0, 0, max(var(--flashlight-cover-opacity), 0.68)) calc(var(--flashlight-radius) + (var(--flashlight-feather) * 0.58)),
    rgba(0, 0, 0, max(var(--flashlight-cover-opacity), 0.92)) calc(var(--flashlight-radius) + (var(--flashlight-feather) * 0.82)),
    #000000 calc(var(--flashlight-radius) + var(--flashlight-feather))
  );
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  transition: opacity var(--duration-fast) var(--ease-smooth);
}


html[data-flashlight-mode="on"] :focus-visible {
  outline-color: #FFFFFF;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.45);
}

.flashlight-hud {
  --flashlight-hud-color: color-mix(in srgb, var(--color-text-primary) 82%, var(--color-accent) 18%);
  --flashlight-hud-muted: color-mix(in srgb, var(--flashlight-hud-color) 56%, transparent);
  position: fixed;
  right: max(1rem, env(safe-area-inset-right));
  bottom: max(1rem, env(safe-area-inset-bottom));
  z-index: calc(var(--flashlight-layer-z) + 2);
  min-width: min(13rem, calc(100vw - 2rem));
  padding: 0.72rem 0.8rem 0.78rem;
  border: 1px solid color-mix(in srgb, var(--flashlight-hud-color) 24%, transparent);
  border-radius: var(--radius-md);
  color: var(--flashlight-hud-color);
  background:
    linear-gradient(135deg, rgba(10, 12, 10, 0.82), rgba(0, 0, 0, 0.7)),
    color-mix(in srgb, var(--color-bg-secondary) 34%, transparent);
  box-shadow: var(--shadow-glass), inset 0 1px 0 rgba(255, 255, 255, 0.045);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-family: var(--font-mono);
  letter-spacing: var(--tracking-wider);
  line-height: 1;
  text-transform: uppercase;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transform: translate3d(0, 0.35rem, 0);
  transition: opacity 140ms ease, transform 140ms ease, visibility 0s linear 140ms;
}

html[data-flashlight-mode="on"] .flashlight-hud {
  opacity: 0.88;
  visibility: visible;
  transform: translate3d(0, 0, 0);
  transition-delay: 0s;
}

.flashlight-hud::before {
  content: '';
  position: absolute;
  inset: 0.18rem;
  border: 1px solid rgba(255, 255, 255, 0.045);
  border-radius: calc(var(--radius-md) - 0.18rem);
}

.flashlight-hud__readout {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.58rem;
}

.flashlight-hud__label {
  font-size: var(--text-xs);
  color: var(--flashlight-hud-muted);
}

.flashlight-hud__percent {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: color-mix(in srgb, var(--flashlight-hud-color) 88%, white 12%);
}

.flashlight-hud__battery {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.22rem;
  padding: 0.22rem;
  border: 1px solid color-mix(in srgb, var(--flashlight-hud-color) 24%, transparent);
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.22);
}

.flashlight-hud__segment {
  display: block;
  height: 0.5rem;
  border-radius: 1px;
  background: color-mix(in srgb, var(--flashlight-hud-color) 10%, transparent);
}

.flashlight-hud__segment.is-active {
  background: color-mix(in srgb, var(--flashlight-hud-color) 74%, transparent);
}

.flashlight-hud[data-power-state="low"] {
  --flashlight-hud-color: color-mix(in srgb, var(--color-accent-warm) 56%, #E9DFAF 44%);
}

.flashlight-hud[data-power-state="critical"],
.flashlight-hud[data-power-state="empty"] {
  --flashlight-hud-color: color-mix(in srgb, var(--color-accent-warm) 48%, #D9785F 52%);
}

.flashlight-hud[data-power-state="empty"] .flashlight-hud__segment {
  background: color-mix(in srgb, var(--flashlight-hud-color) 14%, transparent);
}

html.reduced-motion[data-flashlight-mode="on"] body::before,
html.reduced-motion[data-flashlight-mode="on"] .flashlight-hud {
  transition: none;
}
/* ========================================
   Shared Footer
   ======================================== */

.footer {
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-border);
  position: relative;
}

.footer-inner {
  display: flex;
  align-items: center;
  position: relative;
  min-height: 40px;
}

.footer-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ========================================
   Responsive Breakpoints
   ======================================== */

@media (max-width: 1200px) {
  .container {
    padding: 0 var(--space-5);
  }

  .grid-cols-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  .grid-cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .theme-toggle {
    width: 38px;
    height: 38px;
  }
}


@media (max-width: 600px) {
  .container {
    padding: 0 var(--space-4);
  }

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }

  .section {
    padding: var(--space-12) 0;
  }

  /* Touch-friendly buttons */
  .btn {
    min-height: 44px;
    padding: var(--space-3) var(--space-5);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-3);
  }

  .section {
    padding: var(--space-10) 0;
  }

  /* Smaller cards on tiny screens */
  .card {
    padding: var(--space-4);
  }

  .nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }
}

/* ========================================
   Accessibility
   ======================================== */

/* Focus-visible styles for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Remove outline for mouse clicks, keep for keyboard */
:focus:not(:focus-visible) {
  outline: none;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {

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

/* ========================================
   Noise texture overlay
   ======================================== */

.noise-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.015;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ========================================
   Smooth scroll target offset (used by main.js)
   Replaces inline scrollMarginTop with a CSS class
   to avoid forced reflows and residual styles.
   ======================================== */

.smooth-scroll-target {
  scroll-margin-top: var(--smooth-scroll-offset, 100px);
}

/* ========================================
   Nav Actions (flashlight toggle only)
   ======================================== */

.nav-actions {
  position: fixed;
  top: 1rem;
  right: 1.25rem;
  z-index: calc(var(--flashlight-layer-z) + 3);
}