/* ==========================================================
   SOFIYAN PASHA — PORTFOLIO STYLESHEET
   Aesthetic: Editorial Dark · Gold Accents · Sharp Typography
   ========================================================== */

/* ── 1. CSS VARIABLES ─────────────────────────────────────── */
:root {
  /* Dark theme (default) */
  --bg-primary:     #0a0c10;
  --bg-secondary:   #0f1117;
  --bg-card:        #13161e;
  --bg-card-hover:  #181c27;
  --bg-glass:       rgba(19, 22, 30, 0.7);

  --text-primary:   #eef0f5;
  --text-secondary: #8b90a0;
  --text-muted:     #555c72;

  --accent:         #d4a843;
  --accent-light:   #e8c068;
  --accent-dim:     rgba(212, 168, 67, 0.12);
  --accent-dim2:    rgba(212, 168, 67, 0.06);

  --border:         rgba(255, 255, 255, 0.07);
  --border-hover:   rgba(212, 168, 67, 0.3);

  --success:        #48c78e;
  --error:          #f14668;

  --shadow-sm:      0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md:      0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg:      0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-accent:  0 0 30px rgba(212, 168, 67, 0.15);

  --radius-sm:      6px;
  --radius-md:      12px;
  --radius-lg:      20px;
  --radius-xl:      28px;

  --transition:     0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  --navbar-h:       70px;
  --container:      1200px;
}

/* Light theme override */
[data-theme="light"] {
  --bg-primary:     #f5f5f0;
  --bg-secondary:   #eeede8;
  --bg-card:        #ffffff;
  --bg-card-hover:  #f9f8f5;
  --bg-glass:       rgba(255, 255, 255, 0.8);

  --text-primary:   #1a1c24;
  --text-secondary: #555c72;
  --text-muted:     #9098b0;

  --accent:         #b8882a;
  --accent-light:   #d4a843;
  --accent-dim:     rgba(184, 136, 42, 0.1);
  --accent-dim2:    rgba(184, 136, 42, 0.05);

  --border:         rgba(0, 0, 0, 0.08);
  --border-hover:   rgba(184, 136, 42, 0.4);

  --shadow-sm:      0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md:      0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-lg:      0 20px 60px rgba(0, 0, 0, 0.12);
  --shadow-accent:  0 0 30px rgba(184, 136, 42, 0.1);
}

/* ── 2. RESET & BASE ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
  cursor: none;
}

/* Show default cursor on touch/mobile */
@media (hover: none) {
  body { cursor: auto; }
  .cursor, .cursor-follower { display: none; }
}

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

/* ── 3. TYPOGRAPHY ───────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.font-mono { font-family: 'JetBrains Mono', monospace; }

/* ── 4. UTILITIES ────────────────────────────────────────── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section        { padding: 100px 0; }
.section--sm    { padding: 32px 0; }

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

/* ── 5. CUSTOM CURSOR ────────────────────────────────────── */
.cursor {
  position: fixed;
  width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.1s, width 0.2s, height 0.2s, opacity 0.2s;
}

.cursor-follower {
  position: fixed;
  width: 36px; height: 36px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.12s ease-out, width 0.3s, height 0.3s, opacity 0.3s, border-color 0.3s;
  opacity: 0.6;
}

.cursor--hover { width: 16px; height: 16px; }
.cursor-follower--hover { width: 50px; height: 50px; border-color: var(--accent-light); opacity: 1; }

/* ── 6. LOADER ───────────────────────────────────────────── */
.loader {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s, visibility 0.5s;
}

.loader.hidden { opacity: 0; visibility: hidden; }

.loader__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 200px;
}

.loader__bar {
  width: 100%;
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.loader__bar::after {
  content: '';
  display: block;
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 2px;
  animation: loaderFill 1.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes loaderFill {
  0%   { width: 0%; }
  60%  { width: 80%; }
  100% { width: 100%; }
}

.loader__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* ── 7. BACK TO TOP ──────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px; height: 44px;
  background: var(--accent);
  color: #0a0c10;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 800;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-accent);
  cursor: none;
}

.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--accent-light); }

/* ── 8. NAVBAR ───────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--navbar-h);
  z-index: 900;
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}

.navbar.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar__logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

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

.navbar__list {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  position: relative;
  transition: color var(--transition);
}

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

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

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.icon-btn {
  width: 36px; height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: 14px;
  transition: color var(--transition), background var(--transition), border-color var(--transition);
}

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

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
}

.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition), background var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── 9. HERO ─────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--navbar-h);
}

/* Dot-grid background */
.hero__grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(212, 168, 67, 0.08) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse 60% 80% at 50% 50%, black, transparent);
}

/* Floating orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  animation: orbDrift 8s ease-in-out infinite alternate;
}

.orb--1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(212, 168, 67, 0.08) 0%, transparent 70%);
  top: -100px; right: -100px;
}

.orb--2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(100, 150, 255, 0.06) 0%, transparent 70%);
  bottom: 0; left: -100px;
  animation-direction: alternate-reverse;
}

@keyframes orbDrift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 20px) scale(1.05); }
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-top: 40px;
  padding-bottom: 60px;
}

.hero__greeting {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero__name {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.hero__role {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 300;
  color: var(--text-secondary);
  margin-bottom: 28px;
  min-height: 2em;
}

.role-static { }

.typed-text {
  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__bio {
  max-width: 560px;
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 48px;
}

.hero__socials {
  display: flex;
  gap: 16px;
}

.hero__socials a {
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 16px;
  transition: color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition);
}

.hero__socials a:hover {
  color: var(--accent);
  border-color: var(--border-hover);
  background: var(--accent-dim);
  transform: translateY(-3px);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: fadeInUp 1s 2s both;
}

.scroll-indicator__line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--accent));
  animation: lineGrow 1.5s ease-in-out infinite;
  transform-origin: top;
}

@keyframes lineGrow {
  0%   { transform: scaleY(0); opacity: 0; }
  50%  { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(0); opacity: 0; }
}

/* ── 10. BUTTONS ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  cursor: none;
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent);
  color: #0a0c10;
  box-shadow: 0 0 0 0 rgba(212, 168, 67, 0.4);
}
.btn--primary:hover {
  background: var(--accent-light);
  box-shadow: 0 0 24px rgba(212, 168, 67, 0.3);
  transform: translateY(-2px);
}

.btn--outline {
  border: 1px solid var(--border-hover);
  color: var(--accent);
  background: transparent;
}
.btn--outline:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.btn--ghost {
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: transparent;
}
.btn--ghost:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
}

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

/* ── 11. SECTION HEADERS ─────────────────────────────────── */
.section-header {
  margin-bottom: 64px;
}

.section-tag {
  display: block;
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

/* ── 12. STATS BAR ───────────────────────────────────────── */
.stats-bar {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-bar__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  padding: 32px 24px;
}

.stat-item {
  flex: 1;
  min-width: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px;
}

.stat-num {
  font-family: 'Syne', sans-serif;
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.stat-suffix {
  font-family: 'Syne', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 6px;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

/* ── 13. ABOUT ───────────────────────────────────────────── */
.about { background: var(--bg-primary); }

.about__grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 64px;
  align-items: start;
}

.about__visual {
  position: sticky;
  top: 100px;
}

.avatar-card {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 260px;
  margin: 0 auto 28px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.avatar-card__initials {
  font-family: 'Syne', sans-serif;
  font-size: 4.5rem;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.8;
  position: relative;
  z-index: 1;
}

.avatar-card__glow {
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: conic-gradient(from 0deg, var(--accent), transparent, var(--accent));
  opacity: 0.3;
  animation: rotateGlow 4s linear infinite;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  padding: 1px;
}

@keyframes rotateGlow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.about__quick-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.quick-info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.quick-info-item i {
  color: var(--accent);
  width: 16px;
  flex-shrink: 0;
}

.about__text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.8;
}

.about__text strong { color: var(--text-primary); font-weight: 500; }

.about__intro {
  font-size: 1.05rem;
  color: var(--text-primary) !important;
}

.about__interests {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.interest-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--accent-dim);
  border: 1px solid rgba(212, 168, 67, 0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
}

/* ── 14. SKILLS ──────────────────────────────────────────── */
.skills { background: var(--bg-secondary); }

.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  animation-delay: var(--delay, 0s);
}

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

.skill-card--learning {
  border-color: rgba(212, 168, 67, 0.2);
  background: var(--accent-dim2);
}

.skill-card__icon {
  width: 40px; height: 40px;
  background: var(--accent-dim);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 17px;
  margin-bottom: 16px;
}

.skill-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text-primary);
}

/* Progress bars */
.skill-list { display: flex; flex-direction: column; gap: 14px; }

.skill-item__header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 6px;
  color: var(--text-secondary);
}

.skill-item__pct { color: var(--accent); font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; }

.skill-bar {
  height: 4px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.skill-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 4px;
  width: 0%;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Skill tags */
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.skill-tags span {
  font-size: 0.78rem;
  padding: 5px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-secondary);
  transition: border-color var(--transition), color var(--transition);
}

.skill-card:hover .skill-tags span {
  border-color: rgba(212, 168, 67, 0.15);
}

.skill-card__note {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── 15. PROJECTS ────────────────────────────────────────── */
.projects { background: var(--bg-primary); }

.project-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 8px 20px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  transition: all var(--transition);
  cursor: none;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), opacity var(--transition);
  animation-delay: var(--delay, 0s);
}

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

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

.project-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.project-card__icon {
  width: 44px; height: 44px;
  background: var(--accent-dim);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 18px;
}

.project-card__links a {
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  transition: all var(--transition);
}

.project-card__links a:hover {
  color: var(--accent);
  border-color: var(--border-hover);
}

.project-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.project-card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 20px;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-card__tags span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  padding: 4px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--accent);
}

/* ── 16. EDUCATION / TIMELINE ────────────────────────────── */
.education { background: var(--bg-secondary); }

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

.timeline__item {
  position: relative;
  margin-bottom: 36px;
  animation-delay: var(--delay, 0s);
}

.timeline__item:last-child { margin-bottom: 0; }

.timeline__dot {
  position: absolute;
  left: -29px;
  top: 20px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-secondary);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.timeline__card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.timeline__card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-accent);
}

.timeline__card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.timeline__card h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.timeline__institution {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.timeline__badge {
  padding: 4px 14px;
  background: var(--accent-dim);
  border: 1px solid rgba(212, 168, 67, 0.3);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}

.timeline__badge--done {
  background: rgba(72, 199, 142, 0.1);
  border-color: rgba(72, 199, 142, 0.3);
  color: var(--success);
}

.timeline__meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

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

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

.highlight-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.highlight-chip i { color: var(--accent); font-size: 11px; }

/* ── 17. CERTIFICATIONS ──────────────────────────────────── */
.certifications { background: var(--bg-primary); }

.certs__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.cert-card {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  animation-delay: var(--delay, 0s);
}

.cert-card:hover {
  transform: translateX(4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-accent);
}

.cert-card__logo {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.cert-card__logo--harvard { background: #A51C30; color: #fff; }
.cert-card__logo--iit     { background: #1E3A8A; color: #fff; }
.cert-card__logo--google  { background: #4285F4; color: #fff; }
.cert-card__logo--cisco   { background: #1BA0D7; color: #fff; }
.cert-card__logo--hr      { background: #2EC866; color: #fff; }

.cert-card__content { flex: 1; min-width: 0; }

.cert-card__content h3 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cert-card__issuer {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.cert-card__year {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  margin-top: 4px;
}

.cert-card__link {
  flex-shrink: 0;
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 12px;
  transition: all var(--transition);
}

.cert-card__link:hover {
  color: var(--accent);
  border-color: var(--border-hover);
}

/* ── 18. CONTACT ─────────────────────────────────────────── */
.contact { background: var(--bg-secondary); }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.contact__tagline {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), transform var(--transition);
  color: var(--text-primary);
}

.contact-detail-item:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.contact-detail-item__icon {
  width: 38px; height: 38px;
  background: var(--accent-dim);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-detail-item__label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.contact-detail-item__value {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.contact__socials {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 44px; height: 44px;
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 17px;
  transition: all var(--transition);
}

.social-link:hover {
  color: var(--accent);
  border-color: var(--border-hover);
  background: var(--accent-dim);
  transform: translateY(-3px);
}

/* Contact form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.form-group input,
.form-group textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

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

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

.form-error {
  font-size: 0.78rem;
  color: var(--error);
  display: block;
  min-height: 1em;
}

.form-status {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(72, 199, 142, 0.1);
  border: 1px solid rgba(72, 199, 142, 0.3);
  color: var(--success);
}

.form-status.error-msg {
  display: block;
  background: rgba(241, 70, 104, 0.1);
  border: 1px solid rgba(241, 70, 104, 0.3);
  color: var(--error);
}

/* ── 19. FOOTER ──────────────────────────────────────────── */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer__left {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__left p {
  font-size: 0.83rem;
  color: var(--text-muted);
}

.footer__right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

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

.footer__top-link {
  font-size: 0.8rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.footer__top-link:hover { gap: 10px; }

/* ── 20. REVEAL ANIMATIONS ───────────────────────────────── */
.reveal-up,
.reveal-left,
.reveal-right {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  transition-delay: var(--delay, 0s);
}

.reveal-left  { transform: translateX(-32px); }
.reveal-right { transform: translateX(32px); }

.reveal-up.visible,
.reveal-left.visible,
.reveal-right.visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* ── 21. RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 1024px) {
  .skills__grid   { grid-template-columns: repeat(2, 1fr); }
  .projects__grid { grid-template-columns: repeat(2, 1fr); }
  .about__grid    { grid-template-columns: 1fr; gap: 40px; }
  .about__visual  { position: static; }
  .avatar-card    { max-width: 200px; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  /* Navbar */
  .navbar__nav {
    position: fixed;
    top: var(--navbar-h);
    left: 0; right: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s;
  }

  .navbar__nav.open {
    max-height: 400px;
    padding: 16px 0;
  }

  .navbar__list {
    flex-direction: column;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 12px 24px;
    font-size: 1rem;
  }

  .hamburger { display: flex; }

  /* Grids */
  .skills__grid   { grid-template-columns: 1fr; }
  .projects__grid { grid-template-columns: 1fr; }
  .certs__grid    { grid-template-columns: 1fr; }
  .contact__grid  { grid-template-columns: 1fr; }
  .stats-bar__inner { gap: 0; }
  .stat-divider   { width: 100%; height: 1px; }

  /* Hero */
  .hero__name { font-size: 2.4rem; }
  .hero__cta  { flex-direction: column; }
  .btn        { justify-content: center; }

  .scroll-indicator { display: none; }
}

@media (max-width: 480px) {
  .hero__name  { font-size: 2rem; }
  .section-title { font-size: 1.8rem; }
  .stats-bar__inner { flex-direction: column; }
  .stat-divider { display: none; }
  .back-to-top { bottom: 20px; right: 20px; }
}