/* ============================================================
   CHRISTIAN JERIA — iCloud-inspired Design Portfolio
   ============================================================ */

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

:root {
  --bg-base: #f5f5f7;
  --bg-gradient: linear-gradient(160deg, #e8f4fd 0%, #f5f5f7 40%, #faf0ff 100%);
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(0, 0, 0, 0.06);
  --glass-border-hover: rgba(0, 113, 227, 0.3);
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --radius-card: 24px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', system-ui, sans-serif;
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font);
  background: var(--bg-base);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* --- Layout Helpers ---------------------------------------- */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 60px);
}

.section {
  padding: clamp(80px, 10vw, 140px) 0;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
  border-bottom: 1px solid transparent;
}

#nav.scrolled {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom-color: var(--glass-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px clamp(20px, 5vw, 60px);
}

.nav-logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  transition: opacity var(--transition);
}
.nav-logo:hover { opacity: 0.6; }

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  letter-spacing: -0.2px;
}
.nav-links a:hover { color: var(--text-primary); }

/* ============================================================
   HERO
   ============================================================ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-gradient);
}

/* Animated gradient orbs */
.hero-orbs {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #b3d9f7 0%, #c8e8ff 50%, transparent 80%);
  top: -150px;
  left: -100px;
  animation: orbFloat1 12s ease-in-out infinite;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #e0d4f7 0%, #d8c9ff 50%, transparent 80%);
  bottom: -100px;
  right: -80px;
  animation: orbFloat2 15s ease-in-out infinite;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #d4ecff 0%, #bce0fa 50%, transparent 80%);
  top: 40%;
  left: 55%;
  animation: orbFloat3 10s ease-in-out infinite;
}

@keyframes orbFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(40px, 30px) scale(1.05); }
  66%       { transform: translate(-20px, 50px) scale(0.96); }
}

@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  40%       { transform: translate(-50px, -30px) scale(1.08); }
  70%       { transform: translate(20px, -60px) scale(0.95); }
}

@keyframes orbFloat3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%       { transform: translate(-30px, 40px) scale(1.1); }
}

/* Hero content */
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 120px 24px 80px;
}

.hero-avatar {
  width: 161px;
  height: 161px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 36px;
  position: relative;
  cursor: pointer;
  box-shadow:
    0 16px 16px 0 rgba(12, 12, 13, 0.10),
    0 4px 4px 0 rgba(12, 12, 13, 0.05);
  transition: box-shadow var(--transition);
}
.hero-avatar:hover {
  box-shadow:
    0 20px 40px rgba(12, 12, 13, 0.18),
    0 8px 16px rgba(12, 12, 13, 0.10);
}

.avatar-glare {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.hero-avatar:hover .avatar-glare {
  opacity: 1;
}

.hero-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-headline {
  font-size: clamp(36px, 5.5vw, 64px);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 0.97;
  color: var(--text-primary);
  max-width: 799px;
  margin: 0 auto 28px;
}

.hero-eyebrow {
  font-size: clamp(13px, 1.5vw, 15px);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.hero-name {
  font-size: clamp(56px, 9vw, 104px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.95;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.hero-tagline {
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 44px;
  letter-spacing: -0.01em;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--accent);
  color: #fff;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.2px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(0, 113, 227, 0.28);
}
.hero-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 113, 227, 0.36);
}

/* Scroll cue */
.scroll-cue {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-secondary);
  opacity: 0.5;
  animation: scrollBounce 2.4s ease-in-out infinite;
  transition: opacity var(--transition);
  z-index: 1;
}
.scroll-cue:hover { opacity: 0.8; }

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* Hero entrance animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }

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

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
  margin-bottom: clamp(40px, 6vw, 64px);
}

.section-title {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: clamp(15px, 1.8vw, 18px);
  color: var(--text-secondary);
  font-weight: 400;
  letter-spacing: -0.01em;
}

/* ============================================================
   WORK GRID
   ============================================================ */
.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
  gap: 20px;
}

/* Stagger large card */
@media (min-width: 768px) {
  .work-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .card-large {
    grid-column: span 2;
  }
}

/* Project cards */
.project-card {
  display: block;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
}
.project-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--glass-border-hover);
}

.card-glare {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.project-card:hover .card-glare {
  opacity: 1;
}

/* Card thumbnails */
.card-thumbnail {
  height: 200px;
  position: relative;
  overflow: hidden;
}
.card-large .card-thumbnail {
  height: 200px;
}

.thumbnail-inner {
  position: absolute;
  inset: 0;
}

.card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
}

/* Placeholder gradient tiles mimicking iCloud app tiles */
.thumbnail-1 {
  background: linear-gradient(135deg, #d4ecf5 0%, #c4e2f0 50%, #b9daed 100%);
}
.thumbnail-2 {
  background: linear-gradient(135deg, #e4d4f8 0%, #d8c7f4 50%, #cfbcf0 100%);
}
.thumbnail-3 {
  background: linear-gradient(135deg, #d4f6e2 0%, #bfead2 50%, #afe2c8 100%);
}
.thumbnail-4 {
  background: linear-gradient(135deg, #f8e2c5 0%, #f4d5b5 50%, #efcba8 100%);
}

/* Decorative shapes inside thumbnails */
.thumb-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.35;
}

.shape-a {
  width: 120px; height: 120px;
  background: rgba(255,255,255,0.6);
  top: -20px; right: 20px;
}
.shape-b {
  width: 80px; height: 80px;
  background: rgba(255,255,255,0.4);
  bottom: 10px; left: 30px;
}
.shape-c {
  width: 160px; height: 160px;
  background: rgba(255,255,255,0.5);
  top: -40px; right: -20px;
}
.shape-d {
  width: 100px; height: 100px;
  background: rgba(255,255,255,0.35);
  bottom: -10px; left: 60px;
}
.shape-e {
  width: 130px; height: 130px;
  background: rgba(255,255,255,0.55);
  top: -30px; left: -20px;
}
.shape-f {
  width: 70px; height: 70px;
  background: rgba(255,255,255,0.4);
  bottom: 15px; right: 40px;
}
.shape-g {
  width: 110px; height: 110px;
  background: rgba(255,255,255,0.5);
  top: -20px; left: 40px;
}
.shape-h {
  width: 85px; height: 85px;
  background: rgba(255,255,255,0.35);
  bottom: -5px; right: 20px;
}

.card-body {
  padding: 24px 28px 28px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0, 113, 227, 0.08);
  border-radius: 980px;
  padding: 3px 10px;
}

.year {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 400;
}

.card-title {
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.25;
}

.card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  gap: clamp(40px, 6vw, 80px);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.about-text .section-title {
  margin-bottom: 28px;
}

.about-bio {
  font-size: clamp(15px, 1.8vw, 17px);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.about-bio:last-child { margin-bottom: 0; }

.skills-heading {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--glass-bg);
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  border: 1px solid var(--glass-border);
  border-radius: 980px;
  padding: 7px 16px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  letter-spacing: -0.01em;
}
.chip:hover {
  border-color: rgba(0, 113, 227, 0.25);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ============================================================
   CONTACT
   ============================================================ */
#contact {
  background: var(--bg-gradient);
  position: relative;
  overflow: hidden;
}

#contact::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(179, 217, 247, 0.4) 0%, transparent 70%);
  top: -200px;
  right: -100px;
  border-radius: 50%;
  pointer-events: none;
}

.contact-inner {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
}

.contact-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.contact-heading {
  font-size: clamp(44px, 7vw, 80px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.0;
  color: var(--text-primary);
  margin-bottom: 48px;
}

.contact-email-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 18px 36px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  font-size: clamp(15px, 1.8vw, 18px);
  font-weight: 500;
  color: var(--accent);
  box-shadow: var(--shadow-md);
  letter-spacing: -0.02em;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition),
    background var(--transition);
  margin-bottom: 40px;
}
.contact-email-btn:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--glass-border-hover);
  background: rgba(255, 255, 255, 0.88);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition),
    color var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}
.social-link:hover {
  color: var(--accent);
  transform: translateY(-3px);
  border-color: var(--glass-border-hover);
  box-shadow: var(--shadow-md);
}

/* ============================================================
   FOOTER
   ============================================================ */
#footer {
  padding: 32px 0;
  border-top: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.5);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 400;
}

.footer-nav {
  display: flex;
  gap: 24px;
}

.footer-nav a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--text-primary); }

/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Stagger delay for grid children */
.work-grid .project-card:nth-child(1) { transition-delay: 0.05s; }
.work-grid .project-card:nth-child(2) { transition-delay: 0.12s; }
.work-grid .project-card:nth-child(3) { transition-delay: 0.19s; }
.work-grid .project-card:nth-child(4) { transition-delay: 0.26s; }

/* ============================================================
   PROJECT PAGES
   ============================================================ */
.project-hero {
  position: relative;
  padding-top: calc(52px + clamp(45px, 6vw, 75px));
  padding-bottom: clamp(60px, 8vw, 100px);
  overflow: hidden;
  min-height: 420px;
}

.project-hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(32px, 5vw, 60px);
}

.project-hero-text {
  flex: 0 1 560px;
  min-width: 0;
}

.project-hero-img-wrap {
  flex: 0 0 420px;
  width: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-hero-img-wrap img {
  width: 100%;
  height: auto;
  max-height: 380px;
  object-fit: contain;
  display: block;
  user-select: none;
  pointer-events: none;
}

/* Origin Labs — 3 printers side by side */
.hero-printer-trio {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  width: 100%;
}

.hero-printer-trio img {
  width: calc(33.333% - 6px);
  height: auto;
  max-height: 380px;
  object-fit: contain;
  display: block;
  user-select: none;
  pointer-events: none;
}

@media (max-width: 900px) {
  .project-hero-img-wrap {
    flex: 0 0 300px;
    width: 300px;
  }
}

@media (max-width: 767px) {
  .project-hero {
    padding-bottom: 32px;
    min-height: unset;
  }
  .project-hero-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
  .project-hero-text {
    flex: 0 1 250px;
  }
  .project-back {
    margin-bottom: 16px;
  }
  .project-hero-img-wrap {
    width: 100%;
    flex: unset;
    justify-content: center;
  }
  .project-hero-img-wrap img {
    max-height: 200px;
  }
}

.project-hero-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.project-hero-shapes::before,
.project-hero-shapes::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  opacity: 0.4;
}

.project-hero-shapes::before {
  width: 320px;
  height: 320px;
  top: -80px;
  right: 6%;
}

.project-hero-shapes::after {
  width: 180px;
  height: 180px;
  bottom: 20px;
  left: 8%;
}

.project-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(29, 29, 31, 0.6);
  margin-bottom: 36px;
  transition: color var(--transition), gap var(--transition);
}
.project-back:hover {
  color: var(--text-primary);
  gap: 10px;
}

.project-meta-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.project-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.0;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.project-desc {
  font-size: clamp(16px, 1.8vw, 18px);
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.6;
  letter-spacing: -0.01em;
}

.project-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(40px, 6vw, 80px);
}

@media (min-width: 768px) {
  .project-content {
    grid-template-columns: 2fr 1fr;
    align-items: start;
  }
}

.project-section {
  margin-bottom: clamp(40px, 5vw, 60px);
}
.project-section:last-child {
  margin-bottom: 0;
}

.project-section-title {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.project-overview p + p {
  margin-top: 20px;
}

.project-img {
  display: block;
  width: 100%;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  margin: 32px 0;
}

.project-img-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 32px 0;
}

.project-img-pair .project-img {
  margin: 0;
}

.project-list {
  list-style: none;
  margin: 16px 0 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.project-list li {
  font-size: clamp(15px, 1.8vw, 17px);
  color: var(--text-secondary);
  line-height: 1.6;
  letter-spacing: -0.01em;
  padding-left: 20px;
  position: relative;
}

.project-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
}

.project-details {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.project-details dl {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.project-details dt {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.project-details dd {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

/* Project prev/next navigation */
.project-nav {
  border-top: 1px solid var(--glass-border);
  padding: clamp(32px, 5vw, 56px) 0;
  background: rgba(255, 255, 255, 0.5);
}

.project-nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.project-nav-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  min-width: 180px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.project-nav-link:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--glass-border-hover);
}

.project-nav-next {
  text-align: right;
}

.project-nav-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.project-nav-title {
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

/* ============================================================
   LIGHTBOX
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: zoom-out;
}

.lightbox.is-open {
  opacity: 1;
}

.lightbox-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 60px 80px;
  cursor: default;
}

.lightbox-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
  user-select: none;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  z-index: 10;
}
.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: scale(1.1);
}

.lightbox-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  z-index: 10;
}
.lightbox-btn:hover {
  background: rgba(255, 255, 255, 0.22);
}
.lightbox-btn.prev { left: 20px; }
.lightbox-btn.next { right: 20px; }
.lightbox-btn:disabled {
  opacity: 0.25;
  cursor: default;
}
.lightbox-btn:disabled:hover {
  background: rgba(255, 255, 255, 0.12);
}

.lightbox-counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.05em;
}

.project-img {
  cursor: zoom-in;
}

/* ============================================================
   RESPONSIVE — MOBILE
   ============================================================ */
@media (max-width: 767px) {
  .nav-links {
    gap: 20px;
  }
  .nav-links a {
    font-size: 14px;
  }

  .hero-name {
    letter-spacing: -0.035em;
  }

  .card-thumbnail {
    height: 180px;
  }

  .contact-email-btn {
    padding: 16px 24px;
    font-size: 15px;
    word-break: break-all;
    text-align: center;
  }

  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .nav-links {
    gap: 14px;
  }
  .work-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}