/* ============================================
   SHIHAO LAI — Industrial Toy Designer Portfolio
   style.css — Complete Stylesheet
   ============================================ */

/* ---- Local Font Faces ---- */

/* Inter — Body Font */
@font-face {
  font-family: 'Inter';
  src: url('../fonts/Inter-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../fonts/Inter-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../fonts/Inter-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* Oswald substitute — Noto Sans Condensed (similar condensed sans-serif) */
@font-face {
  font-family: 'Oswald';
  src: url('../fonts/NotoSans-CondensedMedium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Oswald';
  src: url('../fonts/NotoSans-CondensedSemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Oswald';
  src: url('../fonts/NotoSans-CondensedBold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---- CSS Custom Properties ---- */
:root {
  /* Colors */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #141414;
  --color-bg-tertiary: #1e1e1e;
  --color-accent-gold: #e0c000;
  --color-accent-yellow: #e0e000;
  --color-accent-blue: #002060;
  --color-text-primary: #f0f0f0;
  --color-text-secondary: #b0b0b0;
  --color-text-muted: #707070;
  --color-border: #2a2a2a;
  --color-highlight-red: #c0392b;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --space-3xl: 100px;

  /* Typography */
  --font-heading: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 60px;

  /* Transitions */
  --transition-fast: 200ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 600ms ease-out;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-accent-gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul, ol {
  list-style: none;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* ---- Subtle Grid Pattern Overlay ---- */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(26,26,26,0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,26,26,0.3) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.4;
}

/* ---- Utility Classes ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  position: relative;
  z-index: 1;
}

.section-padding {
  padding: var(--space-3xl) 0;
}

.gold-line {
  width: 40px;
  height: 2px;
  background: var(--color-accent-gold);
  margin-bottom: var(--space-lg);
}

.section-heading {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 48px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.section-subheading {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

/* ---- Scroll Animations ---- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
  background-color: transparent;
}

.navbar.scrolled {
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 3px;
  color: var(--color-text-primary);
  text-transform: uppercase;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-logo:hover {
  color: var(--color-accent-gold);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  text-decoration: none;
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-gold);
  transition: width var(--transition-normal);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent-gold);
}

.nav-links a.active::after,
.nav-links a:hover::after {
  width: 100%;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu Overlay */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 10, 0.98);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.mobile-menu.open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 28px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.mobile-menu a:hover {
  color: var(--color-accent-gold);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg-primary);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%;
  background-image: url('../images/slide8_image1.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  will-change: transform;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.65) 0%,
    rgba(10, 10, 10, 0.75) 50%,
    rgba(10, 10, 10, 0.92) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 var(--space-lg);
}

.hero-pretitle {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-accent-gold);
  margin-bottom: var(--space-md);
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 0.8s ease-out 0.3s forwards;
}

.hero-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 72px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-text-primary);
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 0.8s ease-out 0.6s forwards;
}

.hero-tagline {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  line-height: 1.6;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 0.8s ease-out 0.9s forwards;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 0.8s ease-out 1.2s forwards;
}

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

.btn-primary {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-bg-primary);
  background: var(--color-accent-gold);
  padding: 14px 36px;
  border: 2px solid var(--color-accent-gold);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-primary:hover {
  background: transparent;
  color: var(--color-accent-gold);
}

.btn-outline {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-text-muted);
  padding-bottom: 2px;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-outline:hover {
  color: var(--color-accent-gold);
  border-color: var(--color-accent-gold);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0;
  animation: heroFadeIn 0.8s ease-out 1.5s forwards;
}

.scroll-indicator span {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--color-text-muted);
  border-bottom: 2px solid var(--color-text-muted);
  transform: rotate(45deg);
  animation: bounceArrow 2s infinite;
}

@keyframes bounceArrow {
  0%, 20%, 50%, 80%, 100% { transform: rotate(45deg) translateY(0); }
  40% { transform: rotate(45deg) translateY(8px); }
  60% { transform: rotate(45deg) translateY(4px); }
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
  background: var(--color-bg-primary);
  position: relative;
  z-index: 1;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.about-text p {
  margin-bottom: var(--space-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.skills-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.skill-badge {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.5px;
  color: var(--color-accent-gold);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  background: var(--color-bg-secondary);
  transition: all var(--transition-fast);
}

.skill-badge:hover {
  border-color: var(--color-accent-gold);
  background: rgba(224, 192, 0, 0.08);
}

.about-image-wrapper {
  position: relative;
}

.about-image-wrapper img {
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-normal);
}

.about-image-wrapper:hover img {
  border-color: var(--color-accent-gold);
}

.about-image-wrapper .image-caption {
  font-size: 14px;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--space-sm);
  font-style: italic;
}

/* ============================================
   PORTFOLIO SECTION
   ============================================ */
.portfolio {
  background: var(--color-bg-secondary);
  position: relative;
  z-index: 1;
}

/* Filter Tabs */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
}

.filter-tab {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 10px 20px;
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.filter-tab:hover {
  color: var(--color-text-primary);
  border-color: var(--color-text-secondary);
}

.filter-tab.active {
  color: var(--color-bg-primary);
  background: var(--color-accent-gold);
  border-color: var(--color-accent-gold);
}

/* Project Cards */
.projects-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xl);
}

.project-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color var(--transition-normal), opacity var(--transition-normal), transform var(--transition-normal);
}

.project-card:hover {
  border-color: rgba(224, 192, 0, 0.3);
}

.project-card.hidden {
  display: none;
}

.project-header {
  padding: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.project-title {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 28px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.project-subtitle {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 14px;
  color: var(--color-accent-gold);
  margin-bottom: var(--space-md);
  letter-spacing: 0.5px;
}

.project-description {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 800px;
}

/* Project Image Grid */
.project-images {
  padding: var(--space-xl);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-md);
}

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

.image-grid.grid-large {
  grid-template-columns: 1fr;
}

.grid-item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
  background: var(--color-bg-tertiary);
}

.grid-item:hover {
  border-color: var(--color-accent-gold);
  transform: scale(1.02);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85);
  transition: filter var(--transition-normal), transform var(--transition-normal);
}

.grid-item:hover img {
  filter: saturate(1);
  transform: scale(1.03);
}

.grid-item .image-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-sm) var(--space-md);
  background: linear-gradient(transparent, rgba(10,10,10,0.9));
  font-size: 12px;
  color: var(--color-text-secondary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.grid-item:hover .image-label {
  opacity: 1;
}

/* Process Steps (Timeline) */
.process-steps {
  padding: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.steps-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
}

.step-item {
  text-align: center;
  position: relative;
}

.step-item::after {
  content: '→';
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-accent-gold);
  font-size: 18px;
}

.step-item:last-child::after {
  display: none;
}

.step-image {
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 4px;
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-sm);
  cursor: pointer;
  transition: border-color var(--transition-normal);
  background: var(--color-bg-tertiary);
}

.step-image:hover {
  border-color: var(--color-accent-gold);
}

.step-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.step-number {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 12px;
  color: var(--color-accent-gold);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}

.step-label {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

/* Engineering Vehicle Transformer — Phase Tabs */
.phase-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: 0 var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.phase-tab {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.phase-tab:hover {
  color: var(--color-text-primary);
  border-color: var(--color-text-secondary);
}

.phase-tab.active {
  color: var(--color-bg-primary);
  background: var(--color-accent-gold);
  border-color: var(--color-accent-gold);
}

.phase-content {
  display: none;
  padding: var(--space-xl);
}

.phase-content.active {
  display: block;
}

.phase-caption {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-style: italic;
  margin-top: var(--space-md);
  padding-left: var(--space-md);
  border-left: 2px solid var(--color-accent-gold);
}

/* Illustration large format */
.illustration-gallery {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.illustration-gallery .grid-item {
  max-height: 600px;
}

.illustration-gallery .grid-item img {
  object-fit: contain;
  background: var(--color-bg-tertiary);
}

/* View Original Slide Button */
.view-slide-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 12px;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  margin-top: var(--space-md);
  transition: all var(--transition-fast);
  background: transparent;
}

.view-slide-btn:hover {
  color: var(--color-accent-gold);
  border-color: var(--color-accent-gold);
}

/* ============================================
   STORYBOARD SECTION
   ============================================ */
.storyboard {
  background: var(--color-bg-primary);
  position: relative;
  z-index: 1;
}

.storyboard-image-wrapper {
  margin-bottom: var(--space-2xl);
  cursor: pointer;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.storyboard-image-wrapper:hover {
  border-color: var(--color-accent-gold);
}

.storyboard-intro {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 800px;
  margin-bottom: var(--space-xl);
  line-height: 1.8;
}

.script-quotes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.quote-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--space-lg);
  position: relative;
  transition: border-color var(--transition-normal);
}

.quote-card:hover {
  border-color: rgba(224, 192, 0, 0.3);
}

.quote-card::before {
  content: '\201C';
  font-family: Georgia, serif;
  font-size: 48px;
  color: var(--color-accent-gold);
  opacity: 0.4;
  position: absolute;
  top: 8px;
  left: 16px;
  line-height: 1;
}

.quote-card p {
  font-style: italic;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  padding-top: var(--space-lg);
}

/* ============================================
   RESUME SECTION
   ============================================ */
.resume {
  background: var(--color-bg-secondary);
  position: relative;
  z-index: 1;
}

.resume-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.resume-column h3 {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-accent-gold);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: var(--space-lg);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-xl);
  padding-left: var(--space-lg);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -29px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent-gold);
  border: 2px solid var(--color-bg-secondary);
}

.timeline-item h4 {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 18px;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.timeline-item .timeline-role {
  font-size: 14px;
  color: var(--color-accent-gold);
  margin-bottom: var(--space-xs);
}

.timeline-item .timeline-date {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.timeline-item .timeline-details {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.timeline-item .timeline-details li {
  margin-bottom: var(--space-xs);
  padding-left: var(--space-md);
  position: relative;
}

.timeline-item .timeline-details li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

/* Skills Badges in Resume */
.resume-skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.resume-skill-badge {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 4px;
  transition: border-color var(--transition-fast);
}

.resume-skill-badge:hover {
  border-color: var(--color-accent-gold);
}

.resume-subsection {
  margin-bottom: var(--space-xl);
}

.resume-subsection h4 {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

.resume-subsection ul {
  list-style: none;
}

.resume-subsection ul li {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  padding-left: var(--space-md);
  position: relative;
}

.resume-subsection ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent-gold);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
  background: var(--color-bg-primary);
  position: relative;
  z-index: 1;
}

.contact-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.contact-info {
  display: flex;
  justify-content: center;
  gap: var(--space-2xl);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.contact-item {
  text-align: center;
}

.contact-item .contact-label {
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.contact-item .contact-value {
  font-size: 16px;
  color: var(--color-text-primary);
}

.contact-item .contact-value a {
  color: var(--color-accent-gold);
  text-decoration: none;
}

.contact-item .contact-value a:hover {
  color: var(--color-accent-yellow);
}

.contact-cta-text {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.btn-contact {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-bg-primary);
  background: var(--color-accent-gold);
  padding: 16px 48px;
  border: 2px solid var(--color-accent-gold);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-contact:hover {
  background: transparent;
  color: var(--color-accent-gold);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer p {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ============================================
   LIGHTBOX
   ============================================ */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.lightbox.open {
  display: flex;
  opacity: 1;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 36px;
  color: var(--color-text-primary);
  cursor: pointer;
  z-index: 2001;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
  background: none;
  border: none;
  font-family: var(--font-body);
  line-height: 1;
}

.lightbox-close:hover {
  color: var(--color-accent-gold);
}

.lightbox-img-container {
  max-width: 90vw;
  max-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-img-container img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
}

.lightbox-caption {
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-top: var(--space-md);
  text-align: center;
  max-width: 600px;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 40px;
  color: var(--color-text-primary);
  cursor: pointer;
  padding: 20px;
  transition: color var(--transition-fast);
  background: none;
  border: none;
  font-family: var(--font-body);
  user-select: none;
}

.lightbox-nav:hover {
  color: var(--color-accent-gold);
}

.lightbox-prev {
  left: 10px;
}

.lightbox-next {
  right: 10px;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media (max-width: 992px) {
  .container {
    padding: 0 var(--space-lg);
  }

  .section-heading {
    font-size: 40px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .resume-grid {
    grid-template-columns: 1fr;
  }

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

  .step-item:nth-child(3)::after {
    display: none;
  }

  .script-quotes {
    grid-template-columns: 1fr;
  }
}

/* Tablet Small */
@media (max-width: 768px) {
  :root {
    --nav-height: 50px;
  }

  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .section-padding {
    padding: 60px 0;
  }

  .section-heading {
    font-size: 32px;
  }

  .hero-title {
    font-size: 48px;
  }

  .hero-tagline {
    font-size: 16px;
  }

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

  .step-item::after {
    display: none;
  }

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

  .image-grid.grid-2 {
    grid-template-columns: 1fr;
  }

  .contact-info {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .phase-tabs {
    padding: var(--space-md);
    padding-top: var(--space-md);
  }

  .lightbox-nav {
    font-size: 28px;
    padding: 10px;
  }

  .lightbox-prev {
    left: 5px;
  }

  .lightbox-next {
    right: 5px;
  }
}

/* Mobile */
@media (max-width: 576px) {
  .container {
    padding: 0 var(--space-md);
  }

  .hero-title {
    font-size: 40px;
    letter-spacing: 2px;
  }

  .hero-pretitle {
    font-size: 12px;
  }

  .section-heading {
    font-size: 28px;
  }

  .section-subheading {
    font-size: 14px;
  }

  .steps-row {
    grid-template-columns: 1fr;
  }

  .image-grid {
    grid-template-columns: 1fr;
  }

  .filter-tabs {
    gap: var(--space-xs);
  }

  .filter-tab {
    font-size: 11px;
    padding: 8px 12px;
  }

  .project-header {
    padding: var(--space-lg);
  }

  .project-images {
    padding: var(--space-lg);
  }

  .project-title {
    font-size: 22px;
  }

  .hero-cta-group {
    flex-direction: column;
    gap: var(--space-md);
  }

  .btn-primary {
    width: 100%;
    text-align: center;
  }
}

/* 4-step process rows (e.g. The One) */
.steps-row.cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 992px) {
  .steps-row.cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-row.cols-4 .step-item::after {
    display: none;
  }
}

@media (max-width: 576px) {
  .steps-row.cols-4 {
    grid-template-columns: 1fr;
  }
}

/* Contact buttons row (email + social icons) */
.contact-buttons {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.social-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid var(--color-accent-gold);
  color: var(--color-accent-gold);
  background: transparent;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.social-icon-btn:hover {
  background: var(--color-accent-gold);
  color: var(--color-bg-primary);
  transform: translateY(-2px);
}

.social-icon-btn svg {
  width: 22px;
  height: 22px;
}

/* ============================================
   EXHIBITION — BERLIN DESIGN WEEK
   ============================================ */
.exhibition {
  background: var(--color-bg-primary);
  position: relative;
  z-index: 1;
}

.exhibition-feature {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.exhibition-image-wrapper {
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--transition-normal);
}

.exhibition-image-wrapper:hover {
  border-color: var(--color-accent-gold);
}

.exhibition-image-wrapper img {
  width: 100%;
  display: block;
}

.exhibition-text p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}

.exhibition-text em {
  color: var(--color-accent-gold);
  font-style: italic;
}

@media (max-width: 992px) {
  .exhibition-feature {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

/* References-available note in Contact */
.references-note {
  margin-top: var(--space-xl);
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-muted);
}