/* =============================================
   PORTFOLIO CSS — SYNE + SPACE MONO
   Black & White Brutalist-Refined Theme
   ============================================= */

/* ---------- CSS VARIABLES ---------- */
:root {
  --bg: #0a0a0a;
  --bg-alt: #111111;
  --surface: #1a1a1a;
  --border: rgba(255,255,255,0.1);
  --text: #f0f0f0;
  --text-muted: #888;
  --accent: #ffffff;
  --accent-glow: rgba(255,255,255,0.15);
  --nav-bg: rgba(10,10,10,0.85);
  --card-bg: #141414;
  --input-bg: #1a1a1a;
  --shadow: 0 8px 32px rgba(0,0,0,0.6);
  --tag-bg: rgba(255,255,255,0.08);
  --tag-border: rgba(255,255,255,0.2);
  font-scheme: dark;
}

[data-theme="light"] {
  --bg: #f5f5f0;
  --bg-alt: #ebebeb;
  --surface: #ffffff;
  --border: rgba(0,0,0,0.1);
  --text: #0a0a0a;
  --text-muted: #666;
  --accent: #0a0a0a;
  --accent-glow: rgba(0,0,0,0.08);
  --nav-bg: rgba(245,245,240,0.85);
  --card-bg: #ffffff;
  --input-bg: #f0f0ec;
  --shadow: 0 8px 32px rgba(0,0,0,0.12);
  --tag-bg: rgba(0,0,0,0.06);
  --tag-border: rgba(0,0,0,0.15);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Syne', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  transition: background 0.4s, color 0.4s;
  cursor: none;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: none; border: none; background: none; }

.accent { color: var(--accent); }

/* ---------- NOISE OVERLAY ---------- */
.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' 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");
  background-size: 200px 200px;
}

/* ---------- CUSTOM CURSOR ---------- */
.cursor {
  width: 8px; height: 8px;
  background: var(--text);
  border-radius: 50%;
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 10000;
  transition: transform 0.1s;
  transform: translate(-50%, -50%);
}

.cursor-follower {
  width: 32px; height: 32px;
  border: 1.5px solid var(--text);
  border-radius: 50%;
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.18s ease, width 0.2s, height 0.2s, opacity 0.2s;
  transform: translate(-50%, -50%);
  opacity: 0.6;
}

body:hover .cursor-follower { opacity: 0.6; }
a:hover ~ .cursor-follower, button:hover ~ .cursor-follower { width: 48px; height: 48px; }

/* ---------- CONTAINER ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* ---------- NAVBAR ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.2rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: all 0.4s;
}

.navbar.scrolled { padding: 0.8rem 3rem; }

.nav-logo {
  font-family: 'Space Mono', monospace;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.logo-bracket { opacity: 0.5; }

.nav-links {
  display: flex; list-style: none; gap: 2.5rem;
}

.nav-link {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.3s;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--text);
  transition: width 0.3s;
}

.nav-link:hover { color: var(--text); }
.nav-link:hover::after { width: 100%; }

/* THEME TOGGLE */
.theme-toggle {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border) !important;
  background: var(--surface) !important;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover { background: var(--accent-glow) !important; }

.toggle-icon {
  position: absolute;
  transition: all 0.3s;
}

.toggle-icon.sun { opacity: 1; transform: translateY(0); }
.toggle-icon.moon { opacity: 0; transform: translateY(20px); }

[data-theme="light"] .toggle-icon.sun { opacity: 0; transform: translateY(-20px); }
[data-theme="light"] .toggle-icon.moon { opacity: 1; transform: translateY(0); }

/* HAMBURGER */
.hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  padding: 8px;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--text);
  transition: all 0.3s;
}

/* MOBILE MENU */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; right: -100%;
  width: 280px; height: 100vh;
  background: var(--surface);
  z-index: 999;
  padding: 5rem 2rem 2rem;
  transition: right 0.4s cubic-bezier(0.77,0,0.175,1);
  border-left: 1px solid var(--border);
}
.mobile-menu.open { right: 0; }
.mobile-menu ul { list-style: none; }
.mobile-menu li { margin-bottom: 2rem; }
.mobile-menu .nav-link { font-size: 1.2rem; color: var(--text); }

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 3rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero-bg-text {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Syne', sans-serif;
  font-size: clamp(6rem, 20vw, 18rem);
  font-weight: 800;
  color: var(--accent);
  opacity: 0.03;
  letter-spacing: -0.05em;
  pointer-events: none;
  white-space: nowrap;
  user-select: none;
}

.hero-content {
  flex: 1;
  max-width: 580px;
  z-index: 2;
}

.hero-greeting {
  font-family: 'Space Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.hero-name {
  font-family: 'Syne', sans-serif;
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 0.95;
  margin-bottom: 1.5rem;
}

.name-line { display: block; }
.name-line.accent {
  color: transparent;
  -webkit-text-stroke: 2px var(--text);
}

.hero-role {
  font-family: 'Space Mono', monospace;
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  min-height: 1.5em;
}

.cursor-blink {
  animation: blink 1s infinite;
  color: var(--text);
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* QUOTE CARD */
.quote-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--text);
  padding: 1.5rem 1.8rem;
  margin-bottom: 2.5rem;
  position: relative;
  border-radius: 2px;
}

.quote-icon {
  font-family: 'Syne', sans-serif;
  font-size: 3rem;
  line-height: 1;
  color: var(--text);
  opacity: 0.2;
  margin-bottom: 0.5rem;
}

.quote-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0.8rem;
}

.quote-author {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text);
  text-transform: uppercase;
}

/* HERO CTA */
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center; gap: 0.5rem;
  padding: 0.9rem 2rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: all 0.3s;
  font-weight: 700;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--text);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
  z-index: 0;
}

.btn:hover::before { transform: scaleX(1); }
.btn span, .btn i { position: relative; z-index: 1; }

.btn-primary {
  background: var(--text);
  color: var(--bg);
}
.btn-primary:hover { color: var(--text); }
.btn-primary:hover::before { background: var(--accent-glow); }

.btn-outline {
  border: 1.5px solid var(--text);
  color: var(--text);
  background: transparent;
}
.btn-outline:hover { color: var(--bg); }

.btn-full { width: 100%; justify-content: center; }

/* HERO VISUAL */
.hero-visual {
  flex: 0 0 420px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.photo-frame {
  position: relative;
  width: 320px; height: 380px;
}

.profile-photo {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 4px;
  position: relative; z-index: 2;
  filter: grayscale(20%);
  transition: filter 0.4s;
}

.profile-photo:hover { filter: grayscale(0%); }

.photo-border-anim {
  position: absolute;
  inset: -8px;
  border: 2px solid var(--text);
  border-radius: 4px;
  z-index: 1;
  animation: borderRotate 8s linear infinite;
}

@keyframes borderRotate {
  0% { clip-path: polygon(0 0, 20% 0, 20% 2px, 0 2px); }
  25% { clip-path: polygon(98% 0, 100% 0, 100% 20%, 98% 20%); }
  50% { clip-path: polygon(80% 98%, 100% 98%, 100% 100%, 80% 100%); }
  75% { clip-path: polygon(0 80%, 2px 80%, 2px 100%, 0 100%); }
  100% { clip-path: polygon(0 0, 20% 0, 20% 2px, 0 2px); }
}

/* FLOATING TAGS */
.floating-tag {
  position: absolute;
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  border-radius: 2px;
  display: flex; align-items: center; gap: 0.4rem;
  animation: floatTag 4s ease-in-out infinite;
  backdrop-filter: blur(8px);
}

.tag-1 { top: 5%; left: -10%; animation-delay: 0s; }
.tag-2 { bottom: 20%; right: -10%; animation-delay: 1.5s; }
.tag-3 { bottom: 5%; left: -5%; animation-delay: 0.8s; }

@keyframes floatTag {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* SCROLL INDICATOR */
.scroll-indicator {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column;
  align-items: center; gap: 0.5rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.scroll-line {
  width: 1px; height: 50px;
  background: linear-gradient(to bottom, var(--text), transparent);
  animation: scrollAnim 2s ease-in-out infinite;
}

@keyframes scrollAnim {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- TICKER ---------- */
.ticker-wrap {
  overflow: hidden;
  background: var(--text);
  color: var(--bg);
  padding: 0.8rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.ticker {
  display: flex; gap: 2rem;
  animation: ticker 20s linear infinite;
  white-space: nowrap;
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  font-weight: 700;
}

@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- SECTION BASE ---------- */
.section { padding: 8rem 0; }
.section-alt { background: var(--bg-alt); }

.section-header { margin-bottom: 4rem; }

.section-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.8rem;
}

.section-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1;
}

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  align-items: start;
}

.about-photo-wrap { position: relative; }

.about-photo-frame {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
}

.about-photo-frame img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  filter: grayscale(30%);
  transition: filter 0.4s, transform 0.4s;
}

.about-photo-frame:hover img { filter: grayscale(0%); transform: scale(1.02); }

.about-photo-deco {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, var(--bg-alt));
  pointer-events: none;
}

/* LANGUAGE CARDS */
.lang-cards {
  margin-top: 1.5rem;
  display: flex; flex-direction: column; gap: 0.8rem;
}

.lang-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 1rem 1.2rem;
  border-radius: 4px;
}

.lang-flag { font-size: 1.8rem; }

.lang-card strong {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

.lang-bar {
  height: 3px;
  background: var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 0.3rem;
}

.lang-fill {
  height: 100%;
  background: var(--text);
  border-radius: 10px;
  transition: width 1.5s ease;
}

.lang-card small {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

/* ABOUT TEXT */
.about-intro {
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.about-text p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* STATS */
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2.5rem 0;
  padding: 2rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.stat { text-align: center; }

.stat-num {
  display: block;
  font-family: 'Syne', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ---------- SKILLS ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.2rem;
}

.skill-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 1.8rem;
  border-radius: 4px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--text);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}

.skill-card:hover { transform: translateY(-4px); border-color: var(--text); }
.skill-card:hover::before { transform: scaleX(1); }

.skill-icon {
  font-size: 2rem;
  margin-bottom: 0.8rem;
  opacity: 0.8;
}

.skill-card h3 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.skill-bar {
  height: 3px;
  background: var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.skill-fill {
  height: 100%;
  background: var(--text);
  border-radius: 10px;
  width: 0;
  transition: width 1.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.skill-pct {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-muted);
}

/* ---------- PROJECTS ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: all 0.4s;
}

.project-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }

.project-img { position: relative; overflow: hidden; aspect-ratio: 16/10; }

.project-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
  filter: grayscale(30%);
}

.project-card:hover .project-img img { transform: scale(1.05); filter: grayscale(0%); }

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.75);
  display: flex; align-items: center; justify-content: center; gap: 1rem;
  opacity: 0;
  transition: opacity 0.3s;
}

.project-card:hover .project-overlay { opacity: 1; }

.project-link {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--text);
  color: var(--bg);
  padding: 0.6rem 1.2rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  border-radius: 2px;
  transition: all 0.2s;
}

.project-link:hover { opacity: 0.8; }

.project-info { padding: 1.8rem; }

.project-number {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
}

.project-info h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 0.8rem; }

.project-info p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
}

.project-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.project-tags span {
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  padding: 0.3rem 0.8rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  border-radius: 2px;
  letter-spacing: 0.05em;
}

/* ---------- CERTIFICATES ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.cert-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 1.8rem;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cert-card:hover { transform: translateY(-6px); border-color: var(--text); box-shadow: var(--shadow); }

.cert-ribbon {
  position: absolute;
  top: 12px; right: -20px;
  background: var(--text);
  color: var(--bg);
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  padding: 0.2rem 2.5rem;
  transform: rotate(35deg);
  font-weight: 700;
}

.cert-icon {
  font-size: 2rem;
  opacity: 0.7;
}

.cert-info {}
.cert-year {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 0.4rem;
}

.cert-info h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.cert-info p { font-size: 0.8rem; color: var(--text-muted); }

.cert-btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  transition: all 0.3s;
  margin-top: auto;
  width: fit-content;
  letter-spacing: 0.1em;
}

.cert-btn:hover { border-color: var(--text); letter-spacing: 0.2em; }

/* ---------- CONTACT ---------- */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  align-items: start;
}

.contact-left p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

.contact-links { display: flex; flex-direction: column; gap: 1rem; }

.contact-item {
  display: flex; align-items: center; gap: 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.3s;
  padding: 0.8rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--card-bg);
}

.contact-item:hover { color: var(--text); border-color: var(--text); }

.contact-item i { font-size: 1.1rem; width: 20px; }

/* FORM */
.contact-form { display: flex; flex-direction: column; gap: 1.2rem; }

.form-group { display: flex; flex-direction: column; gap: 0.5rem; }

.form-group label {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea {
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.9rem 1rem;
  font-family: 'Syne', sans-serif;
  font-size: 0.95rem;
  border-radius: 2px;
  outline: none;
  transition: border-color 0.3s;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus { border-color: var(--text); }

/* ---------- FOOTER ---------- */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-socials { display: flex; gap: 1rem; }

.footer-socials a {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: all 0.3s;
}

.footer-socials a:hover { border-color: var(--text); color: var(--text); }

/* ---------- BACK TO TOP ---------- */
.back-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  background: var(--text);
  color: var(--bg);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
  z-index: 100;
  border: none !important;
}

.back-top.visible { opacity: 1; pointer-events: auto; }
.back-top:hover { transform: translateY(-4px); }

/* ---------- REVEAL ANIMATION ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ---------- PHOTO UPLOAD ---------- */
.upload-hint {
  display: none;
  position: fixed;
  bottom: 5rem; right: 2rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  border-radius: 4px;
  z-index: 100;
  color: var(--text-muted);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: block; }
  .hero { flex-direction: column; padding: 7rem 1.5rem 4rem; gap: 3rem; text-align: center; }
  .hero-cta { justify-content: center; }
  .hero-visual { flex: none; width: 100%; max-width: 320px; margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-wrap { grid-template-columns: 1fr; gap: 3rem; }
  .projects-grid { grid-template-columns: 1fr; }
  .navbar { padding: 1rem 1.5rem; }
  .hero-bg-text { font-size: 5rem; }
  .floating-tag { display: none; }
  .about-stats { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 600px) {
  .section { padding: 5rem 0; }
  .section-title { font-size: 2.2rem; }
  .hero-name { font-size: 3rem; }
  .cert-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .about-stats { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .stat-num { font-size: 2rem; }
}