/* ============================================================
   Shabeer Hussain — Portfolio Stylesheet
   Structure: Variables → Reset → Base → Layout → Components
              → Pages → Animations → Dark Mode → Responsive
   ============================================================ */

/* ── 1. Design Tokens ─────────────────────────────────────── */
:root {
  --navy:        #0F172A;
  --navy-mid:    #1E293B;
  --navy-light:  #334155;
  --cyan:        #38BDF8;
  --cyan-dark:   #0EA5E9;
  --cyan-glow:   rgba(56,189,248,.18);
  --bg:          #F8FAFC;
  --bg-card:     #FFFFFF;
  --bg-muted:    #F1F5F9;
  --text-primary:#0F172A;
  --text-body:   #334155;
  --text-muted:  #64748B;
  --border:      #E2E8F0;
  --shadow-sm:   0 1px 3px rgba(15,23,42,.06), 0 1px 2px rgba(15,23,42,.04);
  --shadow-md:   0 4px 16px rgba(15,23,42,.08), 0 2px 6px rgba(15,23,42,.06);
  --shadow-lg:   0 20px 60px rgba(15,23,42,.10);
  --shadow-cyan: 0 0 24px rgba(56,189,248,.25);

  --font-display:'Syne', sans-serif;
  --font-body:   'DM Sans', sans-serif;
  --font-mono:   'JetBrains Mono', monospace;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  /* 8-px spacing grid */
  --s1:4px; --s2:8px; --s3:12px; --s4:16px;
  --s5:20px;--s6:24px;--s8:32px;--s10:40px;
  --s12:48px;--s16:64px;--s20:80px;--s24:96px;

  --nav-h:72px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

/* ── 2. Dark-mode Tokens ──────────────────────────────────── */
[data-theme="dark"] {
  --bg:          #0B1220;
  --bg-card:     #111827;
  --bg-muted:    #1A2438;
  --text-primary:#F1F5F9;
  --text-body:   #CBD5E1;
  --text-muted:  #94A3B8;
  --border:      #1E2D45;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.3);
  --shadow-md:   0 4px 16px rgba(0,0,0,.35);
  --shadow-lg:   0 20px 60px rgba(0,0,0,.4);
}

/* ── 3. Reset & Base ─────────────────────────────────────── */
*, *::before, *::after { box-sizing:border-box; margin:0; padding:0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.65;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

img { max-width:100%; height:auto; display:block; }
a  { color:inherit; text-decoration:none; }
ul, ol { list-style:none; }
button { cursor:pointer; font-family:inherit; border:none; background:none; }
input, textarea, select { font-family:inherit; }

/* ── 4. Typography ───────────────────────────────────────── */
h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-display);
  color: var(--text-primary);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p { font-size: 1rem; color: var(--text-body); }

.mono {
  font-family: var(--font-mono);
  font-size: .85em;
}

/* ── 5. Layout Utilities ─────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--s8);
}
@media(max-width:600px){ .container{ padding:0 var(--s5); } }

.section {
  padding: var(--s24) 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--s2);
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 500;
  color: var(--cyan-dark);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: var(--s4);
}
.section-label::before {
  content:'';
  display:inline-block;
  width:18px; height:2px;
  background: var(--cyan);
  border-radius:2px;
}

.section-title {
  margin-bottom: var(--s6);
}

.section-title span {
  color: var(--cyan-dark);
}

/* Grid helpers */
.grid-2 { display:grid; grid-template-columns:repeat(2,1fr); gap:var(--s8); }
.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:var(--s8); }
.grid-auto { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:var(--s8); }

/* ── 6. Navigation ──────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  background: rgba(248,250,252,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border-color var(--transition),
              box-shadow var(--transition);
}
[data-theme="dark"] .nav {
  background: rgba(11,18,32,.88);
}
.nav.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--s8);
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -.03em;
  transition: color var(--transition);
}
.nav__logo span { color: var(--cyan); }
.nav__logo:hover { color: var(--cyan-dark); }

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--s2);
}

.nav__link {
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: var(--s2) var(--s4);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  position: relative;
}
.nav__link::after {
  content:'';
  position:absolute;
  bottom:2px; left:50%; right:50%;
  height:2px;
  background: var(--cyan);
  border-radius:2px;
  transition: left var(--transition), right var(--transition);
}
.nav__link:hover,
.nav__link.active {
  color: var(--text-primary);
  background: var(--bg-muted);
}
.nav__link.active::after {
  left: var(--s4); right: var(--s4);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--s3);
}

/* Dark mode toggle */
.theme-toggle {
  width: 40px; height: 40px;
  display: flex; align-items:center; justify-content:center;
  border-radius: 50%;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: background var(--transition), color var(--transition),
              transform var(--transition);
  font-size: 1rem;
}
.theme-toggle:hover {
  background: var(--cyan-glow);
  color: var(--cyan);
  transform: rotate(20deg);
}

/* Mobile hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--s2);
  border-radius: var(--radius-sm);
}
.nav__hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav__hamburger.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2){ opacity:0; }
.nav__hamburger.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.nav__mobile {
  display: none;
  flex-direction: column;
  gap: var(--s2);
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: var(--s6) var(--s8);
  box-shadow: var(--shadow-md);
  z-index: 999;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition), opacity var(--transition);
}
.nav__mobile.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}
.nav__mobile .nav__link { font-size:1rem; padding:var(--s3) var(--s4); }

/* ── 7. Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s2);
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--cyan);
  color: var(--navy);
  border: 2px solid var(--cyan);
}
.btn-primary:hover {
  background: var(--cyan-dark);
  border-color: var(--cyan-dark);
  box-shadow: var(--shadow-cyan);
  transform: translateY(-2px);
}

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

.btn-ghost {
  background: transparent;
  color: var(--cyan-dark);
  border: 2px solid transparent;
  padding-left: 0;
}
.btn-ghost:hover {
  gap: var(--s3);
  color: var(--cyan);
}
.btn-ghost .btn-arrow {
  transition: transform var(--transition);
}
.btn-ghost:hover .btn-arrow {
  transform: translateX(4px);
}

/* ── 8. Cards ────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--s8);
  transition: transform var(--transition), box-shadow var(--transition),
              border-color var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--cyan-glow);
}

/* ── 9. Tags / Badges ────────────────────────────────────── */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--bg-muted);
  color: var(--text-muted);
  border: 1px solid var(--border);
  letter-spacing: .04em;
  transition: background var(--transition), color var(--transition);
}
.tag:hover, .tag.active {
  background: var(--cyan-glow);
  color: var(--cyan-dark);
  border-color: rgba(56,189,248,.3);
}

/* ── 10. Hero (index) ────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

/* Subtle grid pattern */
.hero__bg::before {
  content:'';
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity:.4;
}

/* Glowing orb */
.hero__bg::after {
  content:'';
  position:absolute;
  top:-10%; right:-5%;
  width:60vmax; height:60vmax;
  background: radial-gradient(circle,
    rgba(56,189,248,.12) 0%,
    rgba(56,189,248,.04) 40%,
    transparent 70%);
  border-radius:50%;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s16);
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--s20) var(--s8);
}

.hero__pre {
  display: inline-flex;
  align-items: center;
  gap: var(--s3);
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--cyan-dark);
  margin-bottom: var(--s6);
  letter-spacing: .1em;
}
.hero__pre-dot {
  width: 8px; height: 8px;
  background: #22C55E;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(34,197,94,.6);
  animation: pulse-green 2s infinite;
}

.hero__name {
  font-size: clamp(3rem, 6.5vw, 5rem);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1;
  margin-bottom: var(--s4);
}
.hero__name em {
  font-style: normal;
  color: var(--cyan-dark);
  position: relative;
}
.hero__name em::after {
  content:'';
  position:absolute;
  bottom:-4px; left:0; right:0;
  height:3px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  border-radius:2px;
}

.hero__role {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: var(--s6);
  letter-spacing: -.01em;
}

.hero__tagline {
  font-size: 1.05rem;
  color: var(--text-body);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: var(--s10);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s4);
  margin-bottom: var(--s12);
}

.hero__stats {
  display: flex;
  gap: var(--s8);
  padding-top: var(--s8);
  border-top: 1px solid var(--border);
}

.hero__stat-number {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -.04em;
  line-height: 1;
  margin-bottom: 2px;
}
.hero__stat-number span { color: var(--cyan); }
.hero__stat-label {
  font-size: .8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Avatar / floating card */
.hero__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s6);
}

.hero__avatar-wrap {
  position: relative;
  width: 280px; height: 280px;
}

.hero__avatar-ring {
  position: absolute; inset: -8px;
  border-radius: 50%;
  border: 2px dashed rgba(56,189,248,.35);
  animation: spin-slow 20s linear infinite;
}

.hero__avatar {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy-mid) 0%, var(--navy) 100%);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 4.5rem;
  font-weight: 800;
  color: var(--cyan);
  border: 4px solid var(--border);
  box-shadow: var(--shadow-lg), var(--shadow-cyan);
  position: relative;
  overflow: hidden;
}
.hero__avatar::before {
  content:'';
  position:absolute; inset:0;
  background: radial-gradient(circle at 30% 30%, rgba(56,189,248,.15), transparent 60%);
}

.hero__avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--border);
  box-shadow: var(--shadow-lg), var(--shadow-cyan);
}

.hero__floating-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--s4) var(--s6);
  box-shadow: var(--shadow-md);
  font-size: .83rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--s3);
  white-space: nowrap;
}
.hero__floating-card strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ── 11. Featured Projects (index) ───────────────────────── */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s6);
  margin-top: var(--s10);
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--s8);
  display: flex;
  flex-direction: column;
  gap: var(--s4);
  transition: transform var(--transition), box-shadow var(--transition),
              border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content:'';
  position:absolute;
  top:0; left:0; right:0;
  height:3px;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-dark));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.project-card:hover::before { transform: scaleX(1); }
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(56,189,248,.2);
}

.project-card__icon {
  width: 44px; height: 44px;
  background: var(--cyan-glow);
  border-radius: var(--radius-md);
  display: flex; align-items:center; justify-content:center;
  font-size: 1.3rem;
  border: 1px solid rgba(56,189,248,.2);
}

.project-card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.project-card__desc {
  font-size: .88rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
}

.project-card__links {
  display: flex;
  gap: var(--s3);
  margin-top: var(--s2);
  padding-top: var(--s4);
  border-top: 1px solid var(--border);
}

.project-link {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition);
}
.project-link:hover { color: var(--cyan-dark); }
.project-link svg { width:14px; height:14px; }

/* ── 12. Skills Preview (index) ──────────────────────────── */
.skills-preview {
  background: var(--bg-muted);
  border-radius: var(--radius-xl);
  padding: var(--s12) var(--s10);
  margin-top: var(--s10);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--s12);
  align-items: center;
}

.skills-preview__categories {
  display: flex;
  flex-direction: column;
  gap: var(--s4);
}

.skill-category {
  display: flex;
  align-items: center;
  gap: var(--s4);
  padding: var(--s4) var(--s5);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
}
.skill-category:hover,
.skill-category.active {
  border-color: var(--cyan);
  background: var(--cyan-glow);
  color: var(--cyan-dark);
}
.skill-category__icon { font-size: 1.2rem; }
.skill-category__name {
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.skills-preview__items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s3);
}

.skill-chip {
  display: flex;
  align-items: center;
  gap: var(--s2);
  padding: var(--s2) var(--s4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-body);
  transition: all var(--transition);
}
.skill-chip:hover {
  border-color: var(--cyan);
  color: var(--cyan-dark);
  background: var(--cyan-glow);
  transform: translateY(-2px);
}
.skill-chip .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

/* ── 13. About Page ──────────────────────────────────────── */
.about-hero {
  padding-top: calc(var(--nav-h) + var(--s16));
  padding-bottom: var(--s16);
}

.about-hero__inner {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--s16);
  align-items: start;
}

.about-hero__text .section-label { margin-bottom: var(--s4); }

.about-intro {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: var(--s6);
}

.about-intro strong { color: var(--text-primary); font-weight: 600; }

.about-hero__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--s5);
}

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--s6);
}

/* Profile Picture (About Page) */
.profile-picture {
  width: 150px;
  height: 150px;
  margin: 0 auto var(--s6);
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--cyan);
  box-shadow: var(--shadow-md), var(--shadow-cyan);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.profile-picture:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg), var(--shadow-cyan);
}

.info-card__title {
  font-family: var(--font-display);
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-muted);
  margin-bottom: var(--s4);
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--s2) 0;
  border-bottom: 1px solid var(--border);
  font-size: .88rem;
}
.info-row:last-child { border-bottom: none; }
.info-row__label { color: var(--text-muted); font-weight: 500; }
.info-row__value { color: var(--text-primary); font-weight: 600; }

/* Education timeline */
.timeline {
  position: relative;
  margin-top: var(--s10);
}
.timeline::before {
  content:'';
  position:absolute;
  left: 18px; top:0; bottom:0;
  width: 2px;
  background: linear-gradient(to bottom, var(--cyan), transparent);
}

.timeline-item {
  display: flex;
  gap: var(--s6);
  padding-bottom: var(--s8);
  position: relative;
}

.timeline-item__dot {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--cyan);
  display: flex; align-items:center; justify-content:center;
  font-size: .85rem;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 12px rgba(56,189,248,.2);
}

.timeline-item__content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--s5) var(--s6);
  flex: 1;
  transition: border-color var(--transition);
}
.timeline-item__content:hover { border-color: rgba(56,189,248,.3); }

.timeline-item__period {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--cyan-dark);
  font-weight: 500;
  margin-bottom: var(--s2);
  letter-spacing: .05em;
}

.timeline-item__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.timeline-item__sub {
  font-size: .85rem;
  color: var(--text-muted);
  margin-bottom: var(--s3);
}

.timeline-item__desc {
  font-size: .85rem;
  color: var(--text-body);
  line-height: 1.6;
}

/* Skills grid (about page) */
.skills-section { margin-top: var(--s16); }

.skills-group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--s6);
  margin-top: var(--s8);
}

.skill-group-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--s6);
  transition: transform var(--transition), box-shadow var(--transition);
}
.skill-group-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.skill-group-card__header {
  display: flex;
  align-items: center;
  gap: var(--s3);
  margin-bottom: var(--s5);
}

.skill-group-card__icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  display: flex; align-items:center; justify-content:center;
  font-size: 1.2rem;
}

.skill-group-card__title {
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
}

.skill-bar-item {}
.skill-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: .8rem;
  color: var(--text-body);
  margin-bottom: var(--s1);
  font-weight: 500;
}
.skill-bar-label span { color: var(--text-muted); }

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

.skill-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-dark));
  border-radius: 4px;
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 1s cubic-bezier(.4,0,.2,1);
}
.skill-bar-fill.animated { transform: scaleX(1); }

/* ── 14. Projects Page ───────────────────────────────────── */
.projects-hero {
  padding-top: calc(var(--nav-h) + var(--s16));
  padding-bottom: var(--s12);
  text-align: center;
}

.projects-hero__desc {
  max-width: 560px;
  margin: 0 auto var(--s8);
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--s2);
  margin-bottom: var(--s12);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--s6);
}

.proj-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition),
              border-color var(--transition);
  display: flex;
  flex-direction: column;
}
.proj-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(56,189,248,.2);
}
.proj-card.hidden { display: none; }

.proj-card__banner {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}
.proj-card__banner::after {
  content:'';
  position:absolute; inset:0;
  background: linear-gradient(to bottom, transparent 60%, var(--bg-card));
}

.proj-card__body {
  padding: var(--s6);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--s3);
}

.proj-card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.proj-card__desc {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
}

.proj-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
  margin-top: auto;
  padding-top: var(--s3);
}

.proj-card__footer {
  padding: var(--s4) var(--s6);
  border-top: 1px solid var(--border);
  display: flex;
  gap: var(--s3);
}

/* ── 15. Contact Page ────────────────────────────────────── */
.contact-hero {
  padding-top: calc(var(--nav-h) + var(--s16));
  padding-bottom: var(--s12);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--s10);
  align-items: start;
}

.contact-info {}

.contact-info__title {
  margin-bottom: var(--s4);
}

.contact-info__desc {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: var(--s8);
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: var(--s4);
  margin-bottom: var(--s8);
}

.contact-card {
  display: flex;
  align-items: center;
  gap: var(--s5);
  padding: var(--s5) var(--s6);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  text-decoration: none;
}
.contact-card:hover {
  border-color: var(--cyan);
  background: var(--cyan-glow);
  transform: translateX(4px);
}

.contact-card__icon {
  width: 44px; height: 44px;
  background: var(--bg-muted);
  border-radius: var(--radius-md);
  display: flex; align-items:center; justify-content:center;
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: background var(--transition);
}
.contact-card:hover .contact-card__icon {
  background: rgba(56,189,248,.2);
}

.contact-card__label {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.contact-card__value {
  font-weight: 600;
  color: var(--text-primary);
  font-size: .92rem;
}

.social-links {
  display: flex;
  gap: var(--s3);
}

.social-link {
  width: 44px; height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex; align-items:center; justify-content:center;
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: all var(--transition);
  text-decoration: none;
}
.social-link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-glow);
  transform: translateY(-3px);
}

/* Contact form */
.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--s10);
}

.form-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--s8);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  margin-bottom: var(--s5);
}

.form-label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-body);
  letter-spacing: .02em;
}

.form-input,
.form-textarea {
  padding: 12px 16px;
  background: var(--bg-muted);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: .9rem;
  font-family: var(--font-body);
  transition: border-color var(--transition), background var(--transition),
              box-shadow var(--transition);
  outline: none;
  width: 100%;
}
.form-input:focus,
.form-textarea:focus {
  border-color: var(--cyan);
  background: var(--bg-card);
  box-shadow: 0 0 0 3px var(--cyan-glow);
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}
.form-textarea {
  min-height: 140px;
  resize: vertical;
  line-height: 1.6;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s5);
}

.form-submit {
  width: 100%;
  justify-content: center;
  padding: 14px;
  font-size: 1rem;
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--s8);
}
.form-success.show { display: block; }
.form-success__icon {
  font-size: 3rem;
  margin-bottom: var(--s4);
}
.form-success__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--s2);
}
.form-success__msg {
  color: var(--text-muted);
  font-size: .9rem;
}

/* ── 16. Footer ──────────────────────────────────────────── */
.footer {
  background: var(--navy);
  color: rgba(248,250,252,.6);
  padding: var(--s10) 0;
  margin-top: var(--s24);
}
[data-theme="dark"] .footer {
  background: #060D18;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--s4);
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -.03em;
}
.footer__logo span { color: var(--cyan); }

.footer__copy {
  font-size: .82rem;
}

.footer__links {
  display: flex;
  gap: var(--s6);
}
.footer__link {
  font-size: .82rem;
  color: rgba(248,250,252,.5);
  transition: color var(--transition);
  text-decoration: none;
}
.footer__link:hover { color: var(--cyan); }

/* ── 17. Scroll Animations ───────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .65s cubic-bezier(.4,0,.2,1),
              transform .65s cubic-bezier(.4,0,.2,1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }

/* ── 18. Keyframe Animations ─────────────────────────────── */
@keyframes pulse-green {
  0%,100% { box-shadow: 0 0 8px rgba(34,197,94,.6); }
  50%      { box-shadow: 0 0 16px rgba(34,197,94,.9); }
}
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

/* ── 19. Page-specific accent bands ──────────────────────── */
.page-header {
  padding-top: calc(var(--nav-h) + var(--s16));
  padding-bottom: var(--s16);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--s16);
}

/* ── 20. Responsive ──────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }

  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .skills-preview {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root { --s20:48px; --s24:64px; }

  .nav__links, .nav__actions .btn { display: none; }
  .nav__hamburger { display: flex; }
  .nav__mobile { display: flex; }

  .featured-grid { grid-template-columns: 1fr; }
  .about-hero__sidebar { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .hero__stats { flex-wrap: wrap; gap: var(--s6); }

  .contact-form-wrap { padding: var(--s6); }
  .skills-preview { padding: var(--s8); }
}

@media (max-width: 480px) {
  .hero__cta { flex-direction: column; }
  .hero__cta .btn { justify-content: center; }
  .footer__inner { text-align:center; justify-content:center; }
  .footer__links { justify-content:center; }
}

/* ── 21. Utility classes ─────────────────────────────────── */
.text-center { text-align:center; }
.text-muted  { color:var(--text-muted); }
.mt-4  { margin-top:var(--s4); }
.mt-6  { margin-top:var(--s6); }
.mt-8  { margin-top:var(--s8); }
.mt-12 { margin-top:var(--s12); }
.mb-4  { margin-bottom:var(--s4); }
.mb-6  { margin-bottom:var(--s6); }
.mb-8  { margin-bottom:var(--s8); }
.flex  { display:flex; }
.gap-2 { gap:var(--s2); }
.gap-3 { gap:var(--s3); }
.gap-4 { gap:var(--s4); }
.items-center { align-items:center; }
.flex-wrap { flex-wrap:wrap; }