/* ============================================================
   RYAN TZU — PORTFOLIO
   Technical UX Designer · Vancouver, CA
   
   COLOR GUIDE (edit these to change the entire site):
   --bg:       #2b2b2b   (charcoal background)
   --accent:   #fba918   (amber primary)
   --accent2:  #c4860f   (amber mid)
   --accent3:  #a89060   (amber muted)
   --accent4:  #7a6530   (amber dark)
   --card-bg:  #333333   (card surface)
   --border:   #3a3a3a   (border color)
   --border-lt:#3d3d3d   (border light)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Outfit:wght@300;400;700;900&display=swap');

:root {
  --bg: #2b2b2b;
  --accent: #fba918;
  --accent2: #c4860f;
  --accent3: #a89060;
  --accent4: #7a6530;
  --card-bg: #333;
  --border: #3a3a3a;
  --border-lt: #3d3d3d;
  --text-muted: #bba36e;
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

/* ---- RESET ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--accent);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; transition: opacity 0.3s; }
a:hover { opacity: 0.8; }
img { max-width: 100%; display: block; }

/* ---- NOISE OVERLAY (subtle grain texture) ---- */
body::after {
  content: '';
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- NAVIGATION ---- */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 48px;
  border-bottom: 1px solid var(--border-lt);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
  backdrop-filter: blur(10px);
}
.nav-logo {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 3px;
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  gap: 32px;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.nav-links a {
  color: var(--accent2);
  transition: color 0.3s;
  position: relative;
}
.nav-links a:hover { color: var(--accent); opacity: 1; }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s;
}
.nav-links a:hover::after { width: 100%; }

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

/* ---- HERO ---- */
.hero {
  position: relative;
  padding: 80px 48px 60px;
  min-height: 60vh;
  display: flex;
  align-items: flex-end;
}
.hero-scatter {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none;
  opacity: 0.5;
}
.hero-scatter span {
  position: absolute;
  will-change: transform;
}

.name-block { position: relative; z-index: 2; }
.name-line {
  font-size: clamp(60px, 10vw, 120px);
  font-weight: 900;
  letter-spacing: -3px;
  line-height: 0.95;
  text-transform: uppercase;
  color: var(--accent);
}
.name-line.outline {
  color: var(--accent);
  opacity: 0.4;
  letter-spacing: 0px;
}
.role-tag {
  display: inline-block;
  margin-top: 20px;
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent2);
  border: 1px solid var(--accent2);
  padding: 6px 18px;
  border-radius: 24px;
}
.sub-bio {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.7;
  margin-top: 24px;
  font-weight: 300;
}

/* ---- MARQUEE ---- */
.marquee-wrap {
  overflow: hidden;
  border-top: 1px solid var(--border-lt);
  border-bottom: 1px solid var(--border-lt);
  padding: 14px 0;
}
.marquee-track {
  display: flex;
  gap: 3rem;
  white-space: nowrap;
  animation: scroll-left 25s linear infinite;
  font-size: 13px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent2);
}
@keyframes scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ---- SECTIONS ---- */
.section-hdr {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 0 48px;
  margin: 80px 0 12px;
}
.section-hdr h2 {
  font-size: 32px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -1px;
  color: var(--accent);
}
.section-hdr .lang-cycle {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent4);
  min-width: 80px;
}
.section-sub {
  padding: 0 48px;
  font-size: 15px;
  color: var(--accent3);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 600px;
  font-weight: 300;
}

/* ---- PROJECT CARDS (homepage) ---- */
.project-grid {
  padding: 0 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.project-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0;
  background: var(--card-bg);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  overflow: hidden;
  cursor: pointer;
  display: block;
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  opacity: 1;
}
.project-card:hover .proj-arrow {
  color: var(--accent);
  transform: translateX(4px);
}
.proj-thumb {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}
.proj-thumb-placeholder {
  width: 100%;
  height: 240px;
  background: linear-gradient(135deg, var(--border) 0%, #444 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: #555;
  letter-spacing: 2px;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}
.proj-body { padding: 24px; }
.proj-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 10px;
}
.proj-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
}
.proj-subtitle {
  font-size: 12px;
  color: var(--accent4);
  letter-spacing: 1px;
  margin-top: 2px;
}
.proj-arrow {
  font-size: 20px;
  color: var(--accent4);
  transition: all 0.3s;
  margin-top: 4px;
}
.proj-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}
.proj-tags span {
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent2);
  border: 1px solid #4a4030;
  padding: 3px 10px;
  border-radius: 14px;
}
.proj-desc {
  font-size: 14px;
  color: var(--accent3);
  line-height: 1.6;
  font-weight: 300;
}
.proj-meta {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.proj-meta-item {
  font-size: 11px;
  color: var(--accent4);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.proj-meta-item strong {
  color: var(--accent2);
  font-weight: 700;
}

/* ---- DIVIDER ---- */
.divider {
  height: 1px;
  background: var(--border-lt);
  margin: 60px 48px;
}

/* ---- ABOUT TEASER (homepage) ---- */
.about-teaser {
  padding: 0 48px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.portrait-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 900;
  color: var(--accent);
  flex-shrink: 0;
}
.portrait-img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
  flex-shrink: 0;
}
.about-teaser-text .name {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}
.about-teaser-text .sub {
  font-size: 12px;
  color: var(--accent2);
  margin-top: 2px;
  letter-spacing: 1px;
}
.about-teaser-text p {
  font-size: 14px;
  color: var(--accent3);
  line-height: 1.7;
  margin-top: 12px;
  font-weight: 300;
}
.about-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}

/* ---- CONTACT BAR ---- */
.contact-bar {
  margin: 60px 48px 0;
  padding: 28px 32px;
  border: 1px solid var(--accent);
  border-radius: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}
.contact-bar .cta {
  font-size: 22px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.5px;
  color: var(--accent);
}
.contact-links {
  display: flex;
  gap: 10px;
}
.contact-links a {
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent2);
  border: 1px solid var(--accent2);
  padding: 8px 20px;
  border-radius: 24px;
  transition: all 0.3s;
}
.contact-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
  opacity: 1;
}

/* ---- FOOTER ---- */
.footer {
  text-align: center;
  margin-top: 60px;
  padding-bottom: 40px;
  font-size: 11px;
  color: var(--accent4);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.site-map {
  padding: 0 48px;
  margin-top: 20px;
}
.site-map-label {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #555;
  margin-bottom: 10px;
}
.site-map-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.site-map-grid a {
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent4);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 16px;
  transition: all 0.3s;
}
.site-map-grid a:hover {
  color: var(--accent);
  border-color: var(--accent);
  opacity: 1;
}

/* ---- CASE STUDY PAGE STYLES ---- */
.case-hero {
  padding: 60px 48px 40px;
}
.case-hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -2px;
  line-height: 1.1;
  color: var(--accent);
}
.case-hero .case-subtitle {
  font-size: 14px;
  color: var(--accent3);
  margin-top: 12px;
  font-weight: 300;
  line-height: 1.6;
  max-width: 600px;
}
.case-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.case-meta-item {
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent4);
}
.case-meta-item strong {
  color: var(--accent2);
}
.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.case-tags span {
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent2);
  border: 1px solid #4a4030;
  padding: 4px 12px;
  border-radius: 14px;
}

/* Case study content */
.case-content {
  padding: 0 48px;
  max-width: 900px;
}
.case-content h2 {
  font-size: 24px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.5px;
  color: var(--accent);
  margin: 48px 0 16px;
}
.case-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent2);
  margin: 32px 0 12px;
}
.case-content p {
  font-size: 15px;
  color: var(--accent3);
  line-height: 1.8;
  margin-bottom: 16px;
  font-weight: 300;
}
.case-content strong {
  color: var(--text-muted);
  font-weight: 700;
}
.case-img {
  width: 100%;
  border-radius: 8px;
  margin: 24px 0;
  border: 1px solid var(--border);
}
.case-img-placeholder {
  width: 100%;
  height: 300px;
  background: linear-gradient(135deg, var(--border) 0%, #444 100%);
  border-radius: 8px;
  margin: 24px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: #555;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.figma-embed {
  width: 100%;
  height: 500px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin: 24px 0;
}

/* ---- IGG WORK PAGE ---- */
.igg-featured {
  padding: 0 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}
.igg-video-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.igg-video-card video,
.igg-video-card .video-placeholder {
  width: 100%;
  height: 280px;
  object-fit: cover;
  background: #1a1a1a;
}
.video-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #555;
  letter-spacing: 2px;
  text-transform: uppercase;
  flex-direction: column;
  gap: 8px;
}
.video-placeholder .play-icon {
  width: 48px;
  height: 48px;
  border: 2px solid #555;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.igg-video-info { padding: 20px; }
.igg-video-info h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
}
.igg-video-info p {
  font-size: 13px;
  color: var(--accent3);
  line-height: 1.5;
  font-weight: 300;
}

.igg-grid {
  padding: 0 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}
.igg-item {
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent4);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 18px;
  transition: all 0.3s;
  cursor: default;
}
.igg-item:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.igg-count {
  padding: 0 48px;
  font-size: 13px;
  color: var(--accent4);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

/* ---- ABOUT PAGE ---- */
.about-hero {
  padding: 60px 48px 40px;
  display: flex;
  gap: 32px;
  align-items: flex-start;
  flex-wrap: wrap;
}
.about-portrait {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
  flex-shrink: 0;
}
.about-portrait-placeholder {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: var(--border);
  border: 3px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  font-weight: 900;
  color: var(--accent);
  flex-shrink: 0;
}
.about-intro h1 {
  font-size: 36px;
  font-weight: 900;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: -1px;
}
.about-intro .role {
  font-size: 14px;
  color: var(--accent2);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 4px;
}
.about-intro p {
  font-size: 15px;
  color: var(--accent3);
  line-height: 1.8;
  margin-top: 16px;
  font-weight: 300;
  max-width: 560px;
}
.about-intro strong {
  color: var(--text-muted);
  font-weight: 700;
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.skill-tags span {
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent2);
  border: 1px solid #4a4030;
  padding: 4px 12px;
  border-radius: 14px;
}

.secondary-projects {
  padding: 0 48px;
}
.secondary-projects h2 {
  font-size: 24px;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.secondary-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  background: var(--card-bg);
  margin-bottom: 16px;
}
.secondary-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
}
.secondary-card p {
  font-size: 13px;
  color: var(--accent3);
  line-height: 1.6;
  font-weight: 300;
}

/* ---- SCROLL ANIMATIONS ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.project-card:nth-child(1) { transition-delay: 0s; }
.project-card:nth-child(2) { transition-delay: 0.1s; }
.project-card:nth-child(3) { transition-delay: 0.2s; }
.project-card:nth-child(4) { transition-delay: 0.3s; }

/* ============================================================
   LIGHT / DARK MODE TOGGLE
   ============================================================ */

.theme-toggle {
  background: none;
  border: 1px solid var(--accent4);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: border-color 0.3s, transform 0.3s;
  flex-shrink: 0;
}
.theme-toggle:hover {
  border-color: var(--accent);
  transform: scale(1.1);
}
.theme-toggle svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: var(--accent2);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 0.3s;
}
.theme-toggle:hover svg {
  stroke: var(--accent);
}
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }

body,
.nav,
.project-card,
.contact-bar,
.contact-links a,
.case-hero,
.igg-video-card,
.secondary-card,
.case-img,
.figma-embed,
.marquee-wrap,
.role-tag,
.case-tags span,
.proj-tags span,
.skill-tags span,
.igg-item,
.site-map-grid a {
  transition: background-color 0.35s ease,
              color 0.35s ease,
              border-color 0.35s ease;
}

/* ---- LIGHT MODE OVERRIDES ---- */
.light-mode {
  --bg: #f5f0e8;
  --accent: #8a6a1a;
  --accent2: #a07c28;
  --accent3: #6b5c3e;
  --accent4: #9a8d76;
  --card-bg: #ffffff;
  --border: #ddd5c4;
  --border-lt: #e2dbd0;
  --text-muted: #7a6530;
}

.light-mode .nav {
  background: rgba(245, 240, 232, 0.92);
}

.light-mode::after {
  opacity: 0.015;
}

.light-mode .hero-scatter {
  opacity: 0.8;
}

.light-mode .name-line {
  color: #6b4f0a;
}
.light-mode .name-line.outline {
  color: #6b4f0a;
  opacity: 0.25;
}

.light-mode .marquee-track {
  color: var(--accent3);
}

.light-mode .project-card:hover {
  border-color: #8a6a1a;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.light-mode .video-placeholder {
  background: #ede7db;
  color: #9a8d76;
}
.light-mode .video-placeholder .play-icon {
  border-color: #9a8d76;
}

.light-mode .proj-thumb-placeholder,
.light-mode .case-img-placeholder {
  background: linear-gradient(135deg, #e2dbd0 0%, #d4cdbf 100%);
  color: #9a8d76;
}

.light-mode .portrait-placeholder,
.light-mode .about-portrait-placeholder {
  background: #e2dbd0;
  border-color: #8a6a1a;
  color: #8a6a1a;
}

.light-mode .contact-bar {
  border-color: #8a6a1a;
}

.light-mode .theme-toggle .icon-sun { display: block; }
.light-mode .theme-toggle .icon-moon { display: none; }

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .nav { padding: 14px 20px; }
  .nav-links { gap: 16px; }
  .nav-right { gap: 16px; }
  .hero { padding: 48px 20px 40px; min-height: 50vh; }
  .section-hdr { padding: 0 20px; margin-top: 48px; }
  .section-sub { padding: 0 20px; }
  .project-grid { padding: 0 20px; }
  .proj-thumb, .proj-thumb-placeholder { height: 180px; }
  .divider { margin: 40px 20px; }
  .about-teaser { padding: 0 20px; flex-direction: column; }
  .contact-bar { margin: 40px 20px 0; padding: 20px; }
  .footer { margin-top: 40px; }
  .site-map { padding: 0 20px; }
  .case-hero { padding: 40px 20px 30px; }
  .case-content { padding: 0 20px; }
  .igg-featured { padding: 0 20px; }
  .igg-grid { padding: 0 20px; }
  .igg-count { padding: 0 20px; }
  .about-hero { padding: 40px 20px; }
  .secondary-projects { padding: 0 20px; }
  .about-hero { flex-direction: column; align-items: center; text-align: center; }
  .about-intro p { max-width: 100%; }
  .skill-tags { justify-content: center; }
  .contact-bar { flex-direction: column; text-align: center; }
  .theme-toggle { width: 28px; height: 28px; }
  .theme-toggle svg { width: 14px; height: 14px; }
}

@media (max-width: 480px) {
  .nav-links { gap: 12px; font-size: 10px; }
  .name-line { letter-spacing: -1px; }
  .proj-title { font-size: 18px; }
  .proj-meta { flex-direction: column; gap: 8px; }
}