/* 
========================================================================
   caickaleixo.com - Core Styling System
   Web Designer, UI Designer & Front-end Developer
   Aesthetics: Premium, Editorial, Elegant, Responsive, High-contrast
======================================================================== 
*/

/* 1. TYPOGRAPHY & LOCAL FONTS */
@font-face {
  font-family: "Work Sans";
  src: url("./Fonts/WorkSans-VariableFont_wght.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Work Sans";
  src: url("./Fonts/WorkSans-Italic-VariableFont_wght.ttf") format("truetype");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("./Fonts/Inter-VariableFont_opsz,wght.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("./Fonts/Inter-Italic-VariableFont_opsz,wght.ttf") format("truetype");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

/* 2. SYSTEM CONSTANTS & DESIGN TOKENS */
:root {
  /* Official Palette */
  --color-night: #0B0B0B;
  --color-jet: #333533;
  --color-eggshell: #F2ECDD;
  --color-saffron: #F5CB5C;
  --color-gold: #CD9C20;
  
  /* Fonts Mapping */
  --font-heading: "Work Sans", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-micro: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Spacings & Layouts */
  --max-width: 1280px;
  --max-width-text: var(--max-width);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* Theme Defaults - Dark Theme (Default) */
  --bg: var(--color-night);
  --fg: var(--color-eggshell);
  --card-bg: #141414;
  --card-hover-bg: #1e1e1e;
  --border-color: rgba(242, 236, 221, 0.12);
  --border-color-hover: var(--color-saffron);
  --accent: var(--color-saffron);
  --accent-hover: var(--color-gold);
  --text-muted: rgba(242, 236, 221, 0.7);
  --text-quiet: rgba(242, 236, 221, 0.45);
  --meta-line: rgba(242, 236, 221, 0.08);
  --toggle-icon-color: var(--color-saffron);
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg: var(--color-eggshell);
  --fg: var(--color-night);
  --card-bg: #EAE3D2;
  --card-hover-bg: #DFD7C3;
  --border-color: rgba(11, 11, 11, 0.15);
  --border-color-hover: var(--color-gold);
  --accent: var(--color-gold);
  --accent-hover: var(--color-night);
  --text-muted: rgba(11, 11, 11, 0.75);
  --text-quiet: rgba(11, 11, 11, 0.5);
  --meta-line: rgba(11, 11, 11, 0.1);
  --toggle-icon-color: var(--color-gold);
}

/* 3. RESET & BASE ELEMENTS */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
  padding-bottom: 2rem;
}

/* Accessibility Focus Indicators */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-micro);
}

/* 4. LAYOUT & STRUCTURE */
.site-container {
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
}

/* Header */
.site-header {
  padding: 32px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.brand {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  line-height: 1;
  position: relative;
  display: inline-block;
}

.brand::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: var(--transition-smooth);
}

.brand:hover::after {
  width: 100%;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav a {
  font-family: var(--font-heading);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
  padding: 4px 0;
  transition: var(--transition-micro);
}

.nav a:hover {
  color: var(--fg);
  transform: translateY(-1px);
}

.nav a.active {
  color: var(--fg);
}

/* Simple Active Link Beacon (Inspired by Ref 1) */
.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background-color: var(--accent);
  border-radius: 50%;
  animation: active-beacon 2s infinite ease-in-out;
}

@keyframes active-beacon {
  0%, 100% {
    transform: translateX(-50%) scale(1);
    opacity: 0.6;
  }
  50% {
    transform: translateX(-50%) scale(1.6);
    opacity: 1;
  }
}

/* Theme Switcher Button */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  padding: 8px;
  border-radius: 50%;
  cursor: pointer;
  color: var(--toggle-icon-color);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.theme-toggle:hover {
  border-color: var(--accent);
  background-color: rgba(255, 255, 255, 0.04);
  transform: scale(1.05);
}

[data-theme="light"] .theme-toggle:hover {
  background-color: rgba(11, 11, 11, 0.04);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* 5. HERO SECTION */
.hero {
  padding: clamp(48px, 8vw, 84px) 0 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 48px;
}

.hero-content {
  max-width: 60ch;
  flex: 1;
}

.eyebrow {
  font-family: var(--font-heading);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: inline-block;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(3.2rem, 9vw, 5.8rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-text {
  color: var(--text-muted);
  font-size: clamp(1.05rem, 2.5vw, 1.28rem);
  line-height: 1.75;
  font-weight: 400;
}

/* Metadata Bar (Inspired by Ref 1 & 2) */
.meta-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 32px 0 64px;
}

.meta-bar p {
  color: var(--text-quiet);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.meta-line {
  flex: 1;
  height: 1px;
  background-color: var(--meta-line);
}

/* Introduction Block */
.intro {
  margin-bottom: 72px;
  width: 100%;
  max-width: none;
}

.intro p {
  width: 100%;
  max-width: none;
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  line-height: 1.7;
  color: var(--fg);
  font-weight: 300;
}

/* 6. CARDS GRID */
.grid-asymmetric {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 24px;
  margin-bottom: 72px;
}

/* Multi-column spanning logic for editorial rhythm */
.grid-asymmetric .card:nth-child(1) {
  grid-column: span 1;
}
.grid-asymmetric .card:nth-child(2) {
  grid-column: span 1;
}
.grid-asymmetric .card:nth-child(3) {
  grid-column: span 1;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-smooth);
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--border-color-hover);
  background-color: var(--card-hover-bg);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .card:hover {
  box-shadow: 0 12px 30px rgba(11, 11, 11, 0.05);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-number {
  font-family: var(--font-heading);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.card-metadata {
  font-family: var(--font-heading);
  font-size: 0.65rem;
  color: var(--text-quiet);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 500;
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 20px;
}

.card-body h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2rem);
  font-weight: 700;
  margin: 36px 0 12px;
  line-height: 1.15;
}

.card-body p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.card-footer {
  margin-top: auto;
  padding-top: 24px;
}

.card-link {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  transition: var(--transition-micro);
}

.card-link svg {
  width: 12px;
  height: 12px;
  fill: currentColor;
  transition: var(--transition-micro);
}

.card:hover .card-link {
  color: var(--accent-hover);
}

.card:hover .card-link svg {
  transform: translateX(4px);
}

/* 7. EDITORIAL STRIP & NOTE */
.editorial-strip {
  border-top: 1px solid var(--border-color);
  padding: 48px 0;
  margin-bottom: 48px;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
}

.editorial-strip .eyebrow {
  margin-bottom: 0;
  padding-top: 4px;
}

.editorial-text {
  font-family: var(--font-body);
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: var(--max-width-text);
  border-left: 2px solid var(--accent);
  padding-left: 24px;
}

/* 8. FOOTER */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  color: var(--text-quiet);
  font-size: 0.8rem;
  font-family: var(--font-heading);
  font-weight: 500;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-link {
  color: var(--text-muted);
  transition: var(--transition-micro);
}

.footer-link:hover {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* 9. RESPONSIVENESS MEDIA QUERIES */
@media (max-width: 900px) {
  .grid-asymmetric {
    grid-template-columns: 1fr 1fr;
  }
  
  .grid-asymmetric .card:nth-child(1) {
    grid-column: span 1;
  }
  .grid-asymmetric .card:nth-child(2) {
    grid-column: span 1;
  }
  .grid-asymmetric .card:nth-child(3) {
    grid-column: span 2; /* Spans full row on medium screens */
  }

  .editorial-strip {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    padding: 24px 0;
  }
  
  .header-right {
    width: 100%;
    justify-content: space-between;
    gap: 16px;
  }

  .nav {
    gap: 16px;
    flex-wrap: wrap;
  }

  .nav a {
    font-size: 0.72rem;
    letter-spacing: 0.05em;
  }

  .grid-asymmetric {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .grid-asymmetric .card:nth-child(3) {
    grid-column: span 1;
  }

  .card {
    min-height: 220px;
    padding: 24px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 16px;
  }
}

/* 10. ABOUT PAGE SPECIFIC STYLES */
.about-wrapper {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: clamp(24px, 5vw, 54px);
  align-items: start;
  margin-top: 32px;
  margin-bottom: 64px;
}

.about-box {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition-smooth);
}

.about-box:hover {
  border-color: var(--border-color-hover);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .about-box:hover {
  box-shadow: 0 8px 24px rgba(11, 11, 11, 0.03);
}

.profile-mark {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  border: 1px solid var(--border-color);
  background: 
    radial-gradient(circle at 30% 20%, rgba(245, 203, 92, 0.12), transparent 45%),
    linear-gradient(135deg, rgba(205, 156, 32, 0.08), rgba(255, 255, 255, 0.01));
  color: var(--accent);
  font-family: var(--font-heading);
  font-size: 6rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 24px;
  user-select: none;
  transition: var(--transition-smooth);
}

.about-box:hover .profile-mark {
  transform: scale(1.02);
  border-color: var(--border-color-hover);
  background: 
    radial-gradient(circle at 30% 20%, rgba(245, 203, 92, 0.18), transparent 45%),
    linear-gradient(135deg, rgba(205, 156, 32, 0.12), rgba(255, 255, 255, 0.02));
}

.about-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.about-box li {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.about-box strong {
  display: block;
  margin-bottom: 6px;
  color: var(--fg);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.about-text p {
  margin-bottom: 24px;
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.85;
  max-width: var(--max-width-text);
}

.about-text p:first-of-type {
  font-size: 1.15rem;
  color: var(--fg);
}

.page-title-section {
  padding-bottom: 12px;
}

.page-title-section .eyebrow {
  margin-bottom: 8px;
}

.page-title {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 8vw, 4.5rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.page-description {
  color: var(--text-muted);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  line-height: 1.7;
  max-width: var(--max-width-text);
  margin-bottom: 32px;
}

@media (max-width: 840px) {
  .about-wrapper {
    grid-template-columns: 1fr;
    gap: 36px;
    margin-top: 16px;
  }

  .about-box {
    max-width: 100%;
  }
}

/* 11. PORTFOLIO & GALLERY SPECIFIC STYLES (art.html) */
.collection {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 54px;
}

.entry {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 270px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.entry::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-smooth);
}

.entry:hover {
  transform: translateY(-6px);
  border-color: var(--border-color-hover);
  background-color: var(--card-hover-bg);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .entry:hover {
  box-shadow: 0 12px 30px rgba(11, 11, 11, 0.05);
}

.entry:hover::before {
  transform: scaleX(1);
}

.entry-meta {
  font-family: var(--font-heading);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}

.entry h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.45rem, 3vw, 1.8rem);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--fg);
  line-height: 1.25;
}

.entry p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 24px;
}

.entry-link {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  transition: var(--transition-micro);
}

.entry-link svg {
  width: 12px;
  height: 12px;
  fill: currentColor;
  transition: var(--transition-micro);
}

.entry:hover .entry-link {
  color: var(--accent-hover);
}

.entry:hover .entry-link svg {
  transform: translateX(4px);
}

.art-section {
  border-top: 1px solid var(--border-color);
  padding-top: 48px;
  margin-top: 48px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 12px;
  color: var(--fg);
}

.section-description {
  color: var(--text-muted);
  font-size: clamp(1rem, 2vw, 1.1rem);
  line-height: 1.7;
  max-width: var(--max-width-text);
  margin-bottom: 32px;
}

/* 12. SKETCHBOOK & OBSERVATION STYLES (drawing-observation.html) */
.study-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.study-index a {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-family: var(--font-heading);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: var(--transition-micro);
}

.study-index a:hover {
  color: var(--fg);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.observation-intro {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  margin-top: 48px;
  margin-bottom: 72px;
}

.spotlight {
  background: linear-gradient(135deg, rgba(245, 203, 92, 0.03), rgba(205, 156, 32, 0.015)), var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: var(--transition-smooth);
}

.spotlight:hover {
  border-color: var(--border-color-hover);
}

.observation-note {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  background-color: var(--card-bg);
  transition: var(--transition-smooth);
}

.observation-note:hover {
  border-color: var(--border-color-hover);
}

.spotlight h2, 
.observation-note h2 {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.25;
  margin-top: 12px;
  margin-bottom: 12px;
}

.sketch-section {
  border-top: 1px solid var(--border-color);
  padding-top: 56px;
  margin-top: 56px;
}

.sketch-section-header {
  max-width: var(--max-width-text);
  margin-bottom: 40px;
}

.sketch-section-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4.5vw, 2.3rem);
  font-weight: 800;
  margin-top: 12px;
  margin-bottom: 12px;
  color: var(--fg);
}

.sketch-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.sketch-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
  overflow: hidden;
}

.sketch-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-color-hover);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .sketch-card:hover {
  box-shadow: 0 10px 25px rgba(11, 11, 11, 0.03);
}

.sketch-placeholder {
  background-color: rgba(242, 236, 221, 0.03);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-quiet);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: grid;
  place-items: center;
  width: 100%;
  margin-bottom: 18px;
  user-select: none;
  transition: var(--transition-smooth);
}

[data-theme="light"] .sketch-placeholder {
  background-color: rgba(11, 11, 11, 0.03);
}

.sketch-placeholder.wide {
  aspect-ratio: 16/10;
}

.sketch-placeholder.tall {
  aspect-ratio: 3/4;
}

.sketch-placeholder.medium {
  aspect-ratio: 1/1;
}

.sketch-placeholder.small {
  aspect-ratio: 4/3;
}

.sketch-card:hover .sketch-placeholder {
  background-color: rgba(245, 203, 92, 0.04);
  border-color: rgba(245, 203, 92, 0.4);
  color: var(--accent);
}

[data-theme="light"] .sketch-card:hover .sketch-placeholder {
  background-color: rgba(205, 156, 32, 0.05);
  border-color: rgba(205, 156, 32, 0.4);
}

.sketch-caption {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.sketch-caption h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 8px;
  margin-bottom: 8px;
  color: var(--fg);
}

.sketch-caption p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
  margin-bottom: 18px;
  flex-grow: 1;
}

.sketch-data {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.sketch-data span {
  font-family: var(--font-heading);
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  padding: 3px 8px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.art-return {
  display: flex;
  justify-content: center;
  padding: 64px 0 32px;
}

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

@media (max-width: 840px) {
  .observation-intro {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 600px) {
  .sketch-board {
    grid-template-columns: 1fr;
  }
}

/* 13. MATERIAL STUDIES STYLES (graffiti-shape-rhythm.html) */
.art-study-main {
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
}

.art-study-hero {
  max-width: var(--max-width-text);
  padding: clamp(48px, 8vw, 84px) 0 48px;
}

.art-study-intro {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  margin-top: 48px;
  margin-bottom: 72px;
}

.art-study-note {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  background-color: var(--card-bg);
  transition: var(--transition-smooth);
}

.art-study-note:hover {
  border-color: var(--border-color-hover);
}

.art-study-note h2 {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.25;
  margin-top: 12px;
  margin-bottom: 12px;
}

.study-section {
  border-top: 1px solid var(--border-color);
  padding-top: 56px;
  margin-top: 56px;
}

.study-section-header {
  max-width: var(--max-width-text);
  margin-bottom: 40px;
}

.study-section-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4.5vw, 2.3rem);
  font-weight: 800;
  margin-top: 12px;
  margin-bottom: 12px;
  color: var(--fg);
}

.masonry-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.study-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
  overflow: hidden;
}

.study-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-color-hover);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .study-card:hover {
  box-shadow: 0 10px 25px rgba(11, 11, 11, 0.03);
}

.study-placeholder {
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-quiet);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: grid;
  place-items: center;
  width: 100%;
  margin-bottom: 18px;
  user-select: none;
  transition: var(--transition-smooth);
  position: relative;
}

/* Placeholder aspect-ratios */
.study-placeholder.wide {
  aspect-ratio: 16/10;
}

.study-placeholder.tall {
  aspect-ratio: 3/4;
}

.study-placeholder.medium {
  aspect-ratio: 1/1;
}

.study-placeholder.small {
  aspect-ratio: 4/3;
}

/* Material CSS Textures */
/* 1. Wood Sculpture (Warm Amber/Veins Gradient) */
.study-placeholder:not(.dark):not(.color):not(.wall) {
  background: 
    radial-gradient(circle at 10% 20%, rgba(205, 156, 32, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(245, 203, 92, 0.05) 0%, transparent 50%),
    repeating-linear-gradient(45deg, rgba(205, 156, 32, 0.02) 0px, rgba(205, 156, 32, 0.02) 2px, transparent 2px, transparent 15px),
    rgba(242, 236, 221, 0.02);
  color: var(--accent);
  border-color: rgba(205, 156, 32, 0.2);
}

.study-card:hover .study-placeholder:not(.dark):not(.color):not(.wall) {
  background-color: rgba(245, 203, 92, 0.05);
  border-color: rgba(245, 203, 92, 0.5);
  color: var(--accent-hover);
}

/* 2. 3D Print (Layered filament horizontal stripes) */
.study-placeholder.dark {
  background: 
    repeating-linear-gradient(0deg, rgba(242, 236, 221, 0.03) 0px, rgba(242, 236, 221, 0.03) 2px, transparent 2px, transparent 4px),
    linear-gradient(135deg, rgba(51, 53, 51, 0.3) 0%, rgba(11, 11, 11, 0.5) 100%),
    #141414;
  color: var(--text-quiet);
  border-color: rgba(242, 236, 221, 0.1);
}

.study-card:hover .study-placeholder.dark {
  background-color: #1e1e1e;
  border-color: var(--accent);
  color: var(--accent);
}

/* 3. Experiments (High-tech tech split grids) */
.study-placeholder.color {
  background: 
    linear-gradient(90deg, rgba(205, 156, 32, 0.04) 50%, rgba(51, 53, 51, 0.08) 50%),
    repeating-linear-gradient(90deg, rgba(242, 236, 221, 0.01) 0px, rgba(242, 236, 221, 0.01) 1px, transparent 1px, transparent 20px),
    repeating-linear-gradient(0deg, rgba(242, 236, 221, 0.01) 0px, rgba(242, 236, 221, 0.01) 1px, transparent 1px, transparent 20px),
    rgba(242, 236, 221, 0.02);
  color: var(--accent);
  border-color: rgba(242, 236, 221, 0.15);
}

.study-card:hover .study-placeholder.color {
  border-color: var(--accent);
  background-color: rgba(245, 203, 92, 0.04);
  color: var(--accent-hover);
}

/* 4. Graffiti and Surface (Rough concrete gray patterns) */
.study-placeholder.wall {
  background: 
    radial-gradient(circle at 50% 50%, rgba(11, 11, 11, 0.2) 0%, transparent 100%),
    linear-gradient(135deg, rgba(245, 203, 92, 0.02) 0%, rgba(205, 156, 32, 0.01) 100%),
    repeating-linear-gradient(135deg, rgba(51, 53, 51, 0.15) 0px, rgba(51, 53, 51, 0.15) 1px, transparent 1px, transparent 6px),
    rgba(51, 53, 51, 0.1);
  color: var(--text-muted);
  border-color: rgba(242, 236, 221, 0.15);
}

.study-card:hover .study-placeholder.wall {
  border-color: var(--accent);
  background-color: rgba(245, 203, 92, 0.04);
  color: var(--accent-hover);
}

.study-caption {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.study-caption h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 8px;
  margin-bottom: 8px;
  color: var(--fg);
}

.study-caption p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
  margin-bottom: 18px;
  flex-grow: 1;
}

.study-data {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.study-data span {
  font-family: var(--font-heading);
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  padding: 3px 8px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

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

@media (max-width: 840px) {
  .art-study-intro {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 600px) {
  .masonry-board {
    grid-template-columns: 1fr;
  }
}

/* 14. DIGITAL COLOR AND PALETTE STYLES (color-composition.html) */
.palette-showcase {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  overflow: hidden;
  margin-bottom: 18px;
  transition: var(--transition-smooth);
}

.palette-showcase.wide {
  aspect-ratio: 16/10;
}

.palette-showcase.tall {
  aspect-ratio: 3/4;
}

.palette-showcase.medium {
  aspect-ratio: 1/1;
}

.palette-showcase.small {
  aspect-ratio: 4/3;
}

.palette-swatch {
  height: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 12px 8px;
  font-family: var(--font-heading);
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: var(--transition-micro);
}

.palette-swatch span {
  opacity: 0;
  transition: var(--transition-micro);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.palette-showcase:hover .palette-swatch span {
  opacity: 1;
}

.palette-swatch.night {
  background-color: var(--color-night);
  color: var(--color-eggshell);
}

.palette-swatch.jet {
  background-color: var(--color-jet);
  color: var(--color-eggshell);
}

.palette-swatch.eggshell {
  background-color: var(--color-eggshell);
  color: var(--color-night);
}

.palette-swatch.saffron {
  background-color: var(--color-saffron);
  color: var(--color-night);
}

.palette-swatch.gold {
  background-color: var(--color-gold);
  color: var(--color-night);
}

.palette-showcase:hover {
  border-color: var(--border-color-hover);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .palette-showcase:hover {
  box-shadow: 0 6px 15px rgba(11, 11, 11, 0.02);
}

.study-placeholder.brush-test {
  background: 
    linear-gradient(135deg, rgba(205, 156, 32, 0.12) 0%, rgba(245, 203, 92, 0.08) 50%, rgba(11, 11, 11, 0.05) 100%),
    repeating-linear-gradient(45deg, rgba(242, 236, 221, 0.01) 0px, rgba(242, 236, 221, 0.01) 2px, transparent 2px, transparent 10px),
    #181818;
  color: var(--accent);
  border-color: rgba(205, 156, 32, 0.25);
}

.study-card:hover .study-placeholder.brush-test {
  border-color: var(--accent);
  background: 
    linear-gradient(135deg, rgba(205, 156, 32, 0.2) 0%, rgba(245, 203, 92, 0.15) 50%, rgba(11, 11, 11, 0.05) 100%),
    repeating-linear-gradient(45deg, rgba(242, 236, 221, 0.02) 0px, rgba(242, 236, 221, 0.02) 2px, transparent 2px, transparent 10px),
    #202020;
  color: var(--accent-hover);
}

[data-theme="light"] .study-placeholder.brush-test {
  background: 
    linear-gradient(135deg, rgba(205, 156, 32, 0.15) 0%, rgba(245, 203, 92, 0.1) 50%, rgba(255, 255, 255, 0.5) 100%),
    repeating-linear-gradient(45deg, rgba(11, 11, 11, 0.01) 0px, rgba(11, 11, 11, 0.01) 2px, transparent 2px, transparent 10px),
    #EBE4D3;
  color: var(--accent);
  border-color: rgba(205, 156, 32, 0.25);
}

[data-theme="light"] .study-card:hover .study-placeholder.brush-test {
  border-color: var(--accent);
  background: 
    linear-gradient(135deg, rgba(205, 156, 32, 0.2) 0%, rgba(245, 203, 92, 0.15) 50%, rgba(255, 255, 255, 0.5) 100%),
    repeating-linear-gradient(45deg, rgba(11, 11, 11, 0.02) 0px, rgba(11, 11, 11, 0.02) 2px, transparent 2px, transparent 10px),
    #E0D9C7;
  color: var(--accent-hover);
}

/* 15. GAMES & INTERACTIVE EXPERIMENTS STYLES (games.html) */
.page-games .collection {
  margin-top: 32px;
}

.page-games .entry {
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.page-games .entry:hover {
  transform: translateY(-8px) scale(1.01);
  border-color: var(--accent);
  box-shadow: 0 16px 36px rgba(245, 203, 92, 0.06);
}

[data-theme="light"] .page-games .entry:hover {
  box-shadow: 0 16px 36px rgba(205, 156, 32, 0.06);
}

/* Tactile background geometric SVG vectors */
.card-decor-svg {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 140px;
  height: 140px;
  color: var(--accent);
  opacity: 0.03;
  pointer-events: none;
  transition: var(--transition-smooth);
  transform: rotate(0deg);
}

[data-theme="light"] .card-decor-svg {
  opacity: 0.05;
}

.page-games .entry:hover .card-decor-svg {
  opacity: 0.08;
  transform: scale(1.1) rotate(15deg);
}

[data-theme="light"] .page-games .entry:hover .card-decor-svg {
  opacity: 0.1;
}

/* Ensure padding-right on card body so text doesn't overlap the SVG decorator */
.page-games .entry .card-body p {
  padding-right: 48px;
}

/* 16. CULTURE PORTAL STYLE SYSTEM (culture.html) */
.culture-path {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  margin-bottom: clamp(48px, 8vw, 72px);
}

.card-quick-links {
  margin-top: 20px;
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-quiet);
}

.card-quick-links strong {
  color: var(--fg);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.card-quick-links a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: var(--transition-micro);
}

.card-quick-links a:hover {
  color: var(--fg);
  text-decoration-color: var(--accent);
}

@media (max-width: 800px) {
  .culture-path {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* 17. MUSIC & LISTENING ARCHIVE PLACEHOLDERS (music.html) */
/* 1. Vinyl grooves texture (radial grooves) */
.study-placeholder.music {
  background: 
    radial-gradient(circle at 50% 50%, transparent 20%, rgba(245, 203, 92, 0.02) 20%, rgba(245, 203, 92, 0.02) 21%, transparent 21%, transparent 40%, rgba(245, 203, 92, 0.02) 40%, rgba(245, 203, 92, 0.02) 41%, transparent 41%),
    repeating-radial-gradient(circle at 50% 50%, rgba(242, 236, 221, 0.01) 0px, rgba(242, 236, 221, 0.01) 1px, transparent 1px, transparent 8px),
    #121212;
  color: var(--accent);
  border-color: rgba(245, 203, 92, 0.2);
}

.study-card:hover .study-placeholder.music {
  border-color: var(--accent);
  background-color: #1a1a1a;
  color: var(--accent-hover);
}

[data-theme="light"] .study-placeholder.music {
  background: 
    radial-gradient(circle at 50% 50%, transparent 20%, rgba(205, 156, 32, 0.04) 20%, rgba(205, 156, 32, 0.04) 21%, transparent 21%),
    repeating-radial-gradient(circle at 50% 50%, rgba(11, 11, 11, 0.015) 0px, rgba(11, 11, 11, 0.015) 1px, transparent 1px, transparent 8px),
    #EAE3D2;
  color: var(--accent);
  border-color: rgba(205, 156, 32, 0.2);
}

/* 2. Acoustic waveforms texture (voice trails) */
.study-placeholder.voice {
  background: 
    linear-gradient(90deg, transparent 49%, rgba(245, 203, 92, 0.06) 49%, rgba(245, 203, 92, 0.06) 51%, transparent 51%),
    repeating-linear-gradient(0deg, rgba(242, 236, 221, 0.015) 0px, rgba(242, 236, 221, 0.015) 1px, transparent 1px, transparent 12px),
    linear-gradient(135deg, rgba(51, 53, 51, 0.2) 0%, rgba(11, 11, 11, 0.4) 100%),
    #161616;
  color: var(--text-quiet);
  border-color: rgba(242, 236, 221, 0.1);
}

.study-card:hover .study-placeholder.voice {
  border-color: var(--accent);
  background-color: #202020;
  color: var(--accent);
}

[data-theme="light"] .study-placeholder.voice {
  background: 
    linear-gradient(90deg, transparent 49%, rgba(205, 156, 32, 0.06) 49%, rgba(205, 156, 32, 0.06) 51%, transparent 51%),
    repeating-linear-gradient(0deg, rgba(11, 11, 11, 0.02) 0px, rgba(11, 11, 11, 0.02) 1px, transparent 1px, transparent 12px),
    #ECE5D5;
  color: var(--text-quiet);
  border-color: rgba(11, 11, 11, 0.12);
}

/* 3. Turntable platter LP record texture (album disc) */
.study-placeholder.album {
  background: 
    radial-gradient(circle at 50% 50%, #111 12%, var(--bg) 12%, var(--bg) 13%, transparent 13%),
    radial-gradient(circle at 50% 50%, transparent 38%, rgba(245, 203, 92, 0.04) 38%, rgba(245, 203, 92, 0.04) 40%, transparent 40%),
    repeating-radial-gradient(circle at 50% 50%, rgba(242, 236, 221, 0.008) 0px, rgba(242, 236, 221, 0.008) 1px, transparent 1px, transparent 5px),
    rgba(242, 236, 221, 0.02);
  color: var(--accent);
  border-color: rgba(242, 236, 221, 0.15);
}

.study-card:hover .study-placeholder.album {
  border-color: var(--accent);
  background-color: rgba(245, 203, 92, 0.03);
  color: var(--accent-hover);
}

[data-theme="light"] .study-placeholder.album {
  background: 
    radial-gradient(circle at 50% 50%, #E0D9C7 12%, var(--bg) 12%, var(--bg) 13%, transparent 13%),
    radial-gradient(circle at 50% 50%, transparent 38%, rgba(205, 156, 32, 0.04) 38%, rgba(205, 156, 32, 0.04) 40%, transparent 40%),
    repeating-radial-gradient(circle at 50% 50%, rgba(11, 11, 11, 0.008) 0px, rgba(11, 11, 11, 0.008) 1px, transparent 1px, transparent 5px),
    rgba(11, 11, 11, 0.02);
  color: var(--accent);
  border-color: rgba(11, 11, 11, 0.15);
}

/* 18. FILMS HUB ARCHIVE SYSTEM (films.html) */
.entries {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: clamp(48px, 8vw, 72px);
}

.entries .featured-entry {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(245, 203, 92, 0.08) 0%, rgba(205, 156, 32, 0.03) 100%), var(--card-bg);
  border-color: rgba(245, 203, 92, 0.25);
}

.entries .featured-entry:hover {
  border-color: var(--color-saffron);
  background: linear-gradient(135deg, rgba(245, 203, 92, 0.12) 0%, rgba(205, 156, 32, 0.06) 100%), var(--card-hover-bg);
}

[data-theme="light"] .entries .featured-entry {
  background: linear-gradient(135deg, rgba(205, 156, 32, 0.08) 0%, rgba(242, 236, 221, 0.2) 100%), var(--card-bg);
  border-color: rgba(205, 156, 32, 0.3);
}

[data-theme="light"] .entries .featured-entry:hover {
  border-color: var(--color-gold);
  background: linear-gradient(135deg, rgba(205, 156, 32, 0.12) 0%, rgba(242, 236, 221, 0.3) 100%), var(--card-hover-bg);
}

/* Secondary Return Link Style */
.secondary-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: var(--transition-smooth);
  background: transparent;
}

.secondary-link:hover {
  border-color: var(--accent);
  color: var(--fg);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .secondary-link:hover {
  box-shadow: 0 4px 12px rgba(11, 11, 11, 0.02);
}

.secondary-link::before {
  content: '←';
  font-size: 0.9rem;
  transition: var(--transition-micro);
}

.secondary-link:hover::before {
  transform: translateX(-3px);
}

/* Return Wrapper */
.art-return,
.culture-return {
  border-top: 1px solid var(--border-color);
  padding: 40px 0 20px;
  margin-top: 40px;
}

@media (max-width: 900px) {
  .entries {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .entries .featured-entry {
    grid-column: span 1;
  }
}

/* 19. CINEMATIC ARCHIVE SPECIFIC PLACEHOLDERS (film-visual-atmosphere.html) */
/* 1. Projection Aperture / Noir shadow texture */
.study-placeholder.cinema {
  background: 
    radial-gradient(circle at 50% 50%, rgba(11, 11, 11, 0.45) 0%, #151515 100%),
    linear-gradient(135deg, rgba(245, 203, 92, 0.06) 0%, rgba(205, 156, 32, 0.02) 100%);
  color: var(--accent);
  border-color: rgba(245, 203, 92, 0.2);
}

.study-card:hover .study-placeholder.cinema {
  border-color: var(--accent);
  background-color: #1e1e1e;
  color: var(--accent-hover);
}

[data-theme="light"] .study-placeholder.cinema {
  background: 
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.25) 0%, #E2DAC6 100%),
    linear-gradient(135deg, rgba(205, 156, 32, 0.06) 0%, rgba(255, 255, 255, 0.1) 100%);
  color: var(--accent);
  border-color: rgba(205, 156, 32, 0.25);
}

/* 2. Lens Viewport outline overlay indicators */
.study-placeholder.frame {
  background: 
    linear-gradient(to right, var(--border-color) 1px, transparent 1px) 0 0,
    linear-gradient(to bottom, var(--border-color) 1px, transparent 1px) 0 0,
    linear-gradient(to left, var(--border-color) 1px, transparent 1px) 100% 100%,
    linear-gradient(to top, var(--border-color) 1px, transparent 1px) 100% 100%,
    rgba(242, 236, 221, 0.01);
  background-size: 20px 20px;
  background-repeat: no-repeat;
  color: var(--text-quiet);
  border-color: var(--border-color);
}

.study-card:hover .study-placeholder.frame {
  border-color: var(--accent);
  color: var(--accent);
}

[data-theme="light"] .study-placeholder.frame {
  background: 
    linear-gradient(to right, var(--border-color) 1px, transparent 1px) 0 0,
    linear-gradient(to bottom, var(--border-color) 1px, transparent 1px) 0 0,
    linear-gradient(to left, var(--border-color) 1px, transparent 1px) 100% 100%,
    linear-gradient(to top, var(--border-color) 1px, transparent 1px) 100% 100%,
    rgba(11, 11, 11, 0.015);
  background-size: 20px 20px;
  background-repeat: no-repeat;
  color: var(--text-quiet);
  border-color: var(--border-color);
}

/* 3. Audio soundtrack kinetic waveforms */
.study-placeholder.sound {
  background: 
    repeating-linear-gradient(90deg, rgba(245, 203, 92, 0.02) 0px, rgba(245, 203, 92, 0.02) 1px, transparent 1px, transparent 16px),
    linear-gradient(180deg, rgba(11, 11, 11, 0.5) 0%, rgba(51, 53, 51, 0.2) 100%),
    #121212;
  color: var(--accent);
  border-color: rgba(245, 203, 92, 0.15);
}

.study-card:hover .study-placeholder.sound {
  border-color: var(--accent);
  background-color: #181818;
  color: var(--accent-hover);
}

[data-theme="light"] .study-placeholder.sound {
  background: 
    repeating-linear-gradient(90deg, rgba(205, 156, 32, 0.025) 0px, rgba(205, 156, 32, 0.025) 1px, transparent 1px, transparent 16px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.4) 0%, rgba(11, 11, 11, 0.05) 100%),
    #ECE5D5;
  color: var(--accent);
  border-color: rgba(205, 156, 32, 0.2);
}

/* 20. GLOSSARY SPECIFIC STYLES (glossary.html) */
.glossary-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 32px;
  margin-bottom: 64px;
}

.glossary-entry {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  transition: var(--transition-smooth);
}

.glossary-entry:hover {
  border-color: var(--border-color-hover);
  background-color: var(--card-hover-bg);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .glossary-entry:hover {
  box-shadow: 0 8px 24px rgba(11, 11, 11, 0.03);
}

.glossary-entry h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--fg);
  margin-top: 6px;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.glossary-entry p {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-muted);
}

.glossary-entry em {
  font-style: italic;
  color: var(--accent);
}

/* 21. 404 PAGE ACTIONS STYLES (404.html) */
.page-404-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

.primary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  background-color: var(--accent);
  color: var(--color-night) !important; /* High contrast in both themes */
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 12px rgba(205, 156, 32, 0.15);
}

[data-theme="dark"] .primary-link {
  background-color: var(--color-saffron);
  border-color: var(--color-saffron);
  color: var(--color-night) !important;
  box-shadow: 0 4px 12px rgba(245, 203, 92, 0.15);
}

.primary-link:hover {
  transform: translateY(-2px);
  background-color: var(--fg);
  border-color: var(--fg);
  color: var(--bg) !important;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .primary-link:hover {
  color: var(--color-eggshell) !important;
}

/* Scoped override for the exit secondary link on 404 page */
.page-404-actions .secondary-link::before {
  content: none !important; /* Remove the standard back arrow '←' */
}

.page-404-actions .secondary-link::after {
  content: '↗';
  font-size: 0.9rem;
  margin-left: 2px;
  transition: var(--transition-micro);
}

.page-404-actions .secondary-link:hover::after {
  transform: translate(2px, -2px);
}

/* ========================================================================
   12. MECHA HERO FIGURE
   ======================================================================== */
.mecha-hero-figure {
  position: relative;
  width: 450px;
  height: 450px;
  cursor: pointer;
  user-select: none;
  display: block;
  flex-shrink: 0;
}

.mecha-base {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.mecha-helmet {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.mecha-hero-figure:hover .mecha-helmet {
  transform: translateY(-120px);
}

/* Theme visibility rules */
.mecha-hero-figure .light-only {
  display: none !important;
}

.mecha-hero-figure .dark-only {
  display: block !important;
}

[data-theme="light"] .mecha-hero-figure .dark-only {
  display: none !important;
}

[data-theme="light"] .mecha-hero-figure .light-only {
  display: block !important;
}

/* Responsive adjustment for Mobile & Hero Flex Direction */
@media (max-width: 800px) {
  .hero {
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
  }
  
  .mecha-hero-figure {
    align-self: center;
    width: 300px;
    height: 300px;
    margin-top: 12px;
  }
  
  .mecha-hero-figure:hover .mecha-helmet {
    transform: translateY(-80px);
  }
}

/* 22. PLAYLIST STUDY PAGE STYLES */

.playlist-study-hero {
  max-width: 780px;
  padding: clamp(48px, 8vw, 84px) 0 32px;
}

.playlist-study-hero .page-description {
  margin-bottom: 32px;
}

.playlist-study-intro {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  margin-bottom: 56px;
}

.playlist-study-note {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  background-color: var(--card-bg);
  transition: var(--transition-smooth);
}

.playlist-study-note:hover {
  border-color: var(--border-color-hover);
}

.playlist-study-note h2 {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.25;
  margin-top: 12px;
  margin-bottom: 12px;
}

.playlist-study-note p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.playlist-card {
  overflow: hidden;
}

.playlist-track-plate {
  min-height: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 18px;
  user-select: none;
  transition: var(--transition-smooth);
  position: relative;
}

.playlist-track-number {
  display: block;
  color: var(--accent);
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 0.9;
}

.playlist-track-type {
  display: block;
  color: var(--text-quiet);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.playlist-card-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 8px;
  margin-bottom: 8px;
}

.playlist-card-note {
  margin-top: 12px;
  color: var(--text-quiet);
  font-size: 0.85rem;
  line-height: 1.6;
  border-left: 2px solid var(--accent);
  padding-left: 10px;
  font-style: italic;
}

/* Return button */
.art-return {
  margin-top: 56px;
  border-top: 1px solid var(--border-color);
  padding-top: 32px;
  text-align: left;
}

.secondary-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: var(--transition-micro);
}

.secondary-link:hover {
  color: var(--fg);
  transform: translateX(-4px);
}

/* Responsive fixes */
@media (max-width: 840px) {
  .playlist-study-intro {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}