/* 
  Fonts:
    Manrope (body)
    Space Grotesk (headings)
    DM Mono (code/accents)
*/

/* CSS Custom Properties */
:root {
  /* Colors */
  --bg-base: #080b12;
  --bg-surface: #0d1117;
  --bg-card: #111827;
  --bg-card-hover: #141d2e;
  --border: #1e2d40;
  --border-light: #243447;

  --accent: #00d4ff; /* electric cayn */
  --accent-dim: #0099bb;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --accent-purple: #7c3aed;
  --accent-purple-glow: rgba(124, 58, 237, 0.15);

  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #4b5675;

  /* Gold / Silver / Bronze */
  --gold: #fbbf24;
  --silver: #94a3b8;
  --bronze: #f97316;

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Manrope', sans-serif;
  --font-mono: 'DM Mono', monospace;

  /* Spacing */
  --section-gap: 9rem;
  --container-w: 1200px;
  --radius: 12px;
  --radius-lg: 20px;

  /* Transitions */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 0.18s;
  --t-normal: 0.35s;
  --t-slow: 0.6s;
}

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

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

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-dim); }

/* Selection */
::selection { background: var(--accent-glow); color: var(--accent); }

/* UTILITY */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 2rem;
}

.section { padding: var(--section-gap) 0; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.section-label span { color: var(--text-muted); }

.section-label::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--accent);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 3rem;
}

.section-title em { font-style: normal; color: var(--accent); }

/* Reveal Animation */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity var(--t-slow) var(--ease),
    transform var(--t-slow) var(--ease);
}

[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

[data-delay="100"].is-visible { transition-delay: 0.1s; }
[data-delay="150"].is-visible { transition-delay: 0.15s; }
[data-delay="200"].is-visible { transition-delay: 0.2s; }
[data-delay="300"].is-visible { transition-delay: 0.3s; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--t-normal) var(--ease);
  white-space: nowrap;
}

.btn-primary { background: var(--accent); color: var(--bg-base); }

.btn-primary:hover {
  background: #33ddff;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 212, 255, 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-sm { padding: 0.5rem 1rem; font-size: 0.8rem; }

/* .cv-info {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
} */

/* NAVIGATION BAR */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.2rem 0;
  transition:
    background var(--t-normal) var(--ease),
    padding var(--t-normal) var(--ease),
    box-shadow var(--t-normal) var(--ease);
}

.navbar.scrolled {
  background: rgba(8, 11, 18, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.8rem 0;
  box-shadow: 0 1px 0 var(--border);
}

.nav-container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--t-fast);
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition:
    color var(--t-fast),
    background var(--t-fast);
}

.nav-link i { font-size: 0.8rem; }

.nav-link:hover,
.nav-link.active { color: var(--accent); background: var(--accent-glow); }

.nav-contact {
  background: var(--accent-glow);
  color: var(--accent);
  margin-left: 0.5rem;
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.nav-contact:hover {
  background: var(--accent);
  color: var(--bg-base);
  border-color: var(--accent);
}

/* Hamburger Icon */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--t-normal) var(--ease);
}

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 998;
}

.nav-overlay.active { display: block; }

/* HERO SECTION */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 7rem 2rem 4rem;
  overflow: hidden;
}

/* Dot-grid background */
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.06) 0%, transparent 40%),
    radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: auto, auto, 36px 36px;
  pointer-events: none;
}

.hero-container {
  max-width: var(--container-w);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
}

/* Hero Text */
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.2);
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.5);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(0, 212, 255, 0);
  }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero-name { color: var(--accent); display: block; }

.hero-typed-wrapper {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  min-height: 1.8em;
}

.hero-typed { color: var(--accent); font-weight: 500; }

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

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

.hero-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 480px;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Hero Image */
.hero-image-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-frame {
  position: relative;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  padding: 6px;
  animation: float 5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

.hero-image-glow {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-photo {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

/* Floating badges */
.hero-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 50px;
  padding: 0.55rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.hero-badge i { color: var(--accent); }

.badge-top { top: 12%; right: -10%; }
.badge-bottom { bottom: 12%; left: -14%; }

/* Scroll Hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scroll-drop 2s ease-in-out infinite;
}

@keyframes scroll-drop {
  0% {
    transform: scaleY(0);
    transform-origin: top;
    opacity: 1;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
    opacity: 1;
  }
  100% {
    transform: scaleY(1);
    transform-origin: bottom;
    opacity: 0;
  }
}

/* ABOUT SECTION */
.about-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 4rem;
  align-items: start;
}

.about-bio {
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  font-size: 1rem;
  line-height: 1.9;
}

.about-bio strong { color: var(--text-primary); }

.about-interests {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.8rem 0 2.2rem;
}

.interest-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition:
    border-color var(--t-fast),
    color var(--t-fast);
}

.interest-tag:hover { border-color: var(--accent); color: var(--accent); }
.interest-tag i { font-size: 0.75rem; }

/* Stat Cards */
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition:
    border-color var(--t-normal),
    transform var(--t-normal);
}

.stat-card:hover { border-color: var(--accent); transform: translateY(-4px); }

.stat-num {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* EDUCATION SECTION */
.education-section { background: var(--bg-base); }

.timeline {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-purple), transparent);
}

.timeline-item { position: relative; }

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 1.6rem;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  border: 2px solid var(--bg-base);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 2.2rem;
  transition:
    border-color var(--t-normal),
    transform var(--t-normal),
    box-shadow var(--t-normal);
}

.timeline-card:hover {
  border-color: var(--accent);
  transform: translateX(6px);
  box-shadow: -4px 0 24px rgba(0, 212, 255, 0.08);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.institution-link {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--t-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.institution-link i { font-size: 0.75rem; color: var(--text-muted); }
.institution-link:hover { color: var(--accent); }

.timeline-degree {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.2);
  padding: 0.2rem 0.7rem;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.2rem;
}

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

.timeline-tags span {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.65rem;
  background: var(--accent-purple-glow);
  border: 1px solid rgba(124, 58, 237, 0.25);
  color: #a78bfa;
  border-radius: 4px;
  letter-spacing: 0.04em;
}

/* AWARDS & CERTIFICATIONS (shared cards grid) */
/* .awards-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.certs-section { background: var(--bg-base); }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.8rem;
}

.award-card,
.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    border-color var(--t-normal),
    transform var(--t-normal),
    box-shadow var(--t-normal);
}

.award-card:hover,
.cert-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.4);
}

.card-img-link { display: block; }

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

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow) var(--ease);
}

.award-card:hover .card-img-wrap img,
.cert-card:hover .card-img-wrap img { transform: scale(1.05); }

.card-img-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  transition: opacity var(--t-normal);
}

.award-card:hover .card-img-overlay,
.cert-card:hover .card-img-overlay { opacity: 1; }

.card-body { padding: 1.4rem 1.6rem; }

.card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.card-organizer {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
} */

/* Award Rank Badge */
/* .award-rank {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.22rem 0.65rem;
  border-radius: 4px;
  margin-bottom: 0.7rem;
}

.rank-gold {
  color: var(--gold);
  background: rgba(251,191,36,0.1);
  border: 1px solid rgba(251,191,36,0.25);
}
.rank-silver {
  color: var(--silver);
  background: rgba(148,163,184,0.1);
  border: 1px solid rgba(148,163,184,0.25);
}
.rank-bronze {
  color: var(--bronze);
  background: rgba(249,115,22,0.1);
  border: 1px solid rgba(249,115,22,0.25);
} */

/* Certifications Badge */
/* .cert-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.65rem;
  background: var(--accent-purple-glow);
  border: 1px solid rgba(124, 58, 237, 0.3);
  color: #a78bfa;
  border-radius: 4px;
  margin-bottom: 0.7rem;
} */

/* SKILLS SECTION */
.skills-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.skills-group { margin-bottom: 3rem; }

.skills-group-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--border);
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition:
    border-color var(--t-fast), 
    color var(--t-fast),
    transform var(--t-fast),
    background var(--t-fast);
}

.skill-item img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.skill-item:hover {
  border-color: var(--accent);
  color: var(--text-primary);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}

/* PORTFOLIO SECTION */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    border-color var(--t-normal),
    transform var(--t-normal),
    box-shadow var(--t-normal);
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-8px);
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.45);
}

.project-img-link { display: block; }

.project-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.project-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow) var(--ease);
}

.project-card:hover
.project-img-wrap img { transform: scale(1.06); }

.project-img-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  opacity: 0;
  transition: opacity var(--t-normal);
}

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

.project-body {
  padding: 1.6rem 1.8rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.4rem;
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.4rem;
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition:
    border-color var(--t-fast),
    color var(--t-fast);
}

.tech-badge img {
  width: 14px;
  height: 14px;
  object-fit: contain;
}

.tech-badge:hover { border-color: var(--accent); color: var(--accent); }

.project-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* FOOTER */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 5rem 0 3rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  text-align: center;
}

.footer-tagline {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
}

.footer-socials { display: flex; gap: 0.8rem; }

.social-link {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  color: var(--text-secondary);
  transition:
    background var(--t-normal),
    color var(--t-normal),
    border-color var(--t-normal),
    transform var(--t-normal);
}

.social-link:hover {
  background: var(--accent);
  color: var(--bg-base);
  border-color: var(--accent);
  transform: translateY(-4px);
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.footer-made {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--border-light);
}

.footer-code-builder {
  color: #D97757;
}

/* BACK TO TOP */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 900;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: var(--bg-base);
  border: none;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  cursor: pointer;
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--t-normal),
    transform var(--t-normal),
    background var(--t-fast);
  pointer-events: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover { background: #33ddff; }

/* RESPONSIVE — TABLET (≤ 900px) */
@media (max-width: 900px) {
  :root { --section-gap: 6rem; }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-text { order: 2; }
  .hero-image-wrap { order: 1; }

  .hero-eyebrow { margin: 0 auto 1.5rem; }
  .hero-sub { margin: 0 auto 2.5rem; }
  .hero-cta { justify-content: center; }

  .hero-image-frame { width: 260px; height: 260px; }
  .badge-top { top: 0; right: 0; }
  .badge-bottom { bottom: 0; left: 0; }

  .about-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: repeat(4, 1fr); }
}

/* RESPONSIVE — MOBILE (≤ 640px) */
@media (max-width: 640px) {
  :root { --section-gap: 5rem; }

  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 85vw);
    height: 100vh;
    background: var(--bg-surface);
    border-left: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 1.5rem 2rem;
    gap: 0.3rem;
    z-index: 999;
    transition: right var(--t-normal) var(--ease);
  }

  .nav-links.open { right: 0; }

  .nav-link {
    width: 100%;
    font-size: 1rem;
    padding: 0.75rem 1rem;
  }

  .nav-contact { margin: 0.5rem 0 0; }

  .about-stats { grid-template-columns: 1fr 1fr; }

  .cards-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }

  .hero-scroll-hint { display: none; }

  .badge-top,
  .badge-bottom { display: none; }

  .timeline { padding-left: 1.5rem; }
  .timeline-dot { left: -1.5rem; }
}