/* ============================================
   ASIF ABIR — Modern Portfolio CSS
   Design: Dark Glassmorphism + Vibrant Accents
   ============================================ */

/* ── Google Fonts ────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ── Design Tokens ───────────────────────────── */
:root {
  --clr-bg:         hsl(222, 22%, 5%);
  --clr-bg-2:       hsl(222, 20%, 8%);
  --clr-surface:    rgba(255, 255, 255, 0.04);
  --clr-surface-2:  rgba(255, 255, 255, 0.07);
  --clr-border:     rgba(255, 255, 255, 0.08);

  --clr-primary:    hsl(258, 90%, 66%);      /* vivid violet */
  --clr-primary-glow: hsla(258, 90%, 66%, 0.25);
  --clr-accent:     hsl(183, 100%, 50%);     /* electric cyan */
  --clr-accent-glow: hsla(183, 100%, 50%, 0.2);
  --clr-gold:       hsl(45, 95%, 60%);

  --clr-text:       hsl(220, 20%, 92%);
  --clr-text-muted: hsl(220, 15%, 55%);
  --clr-text-dim:   hsl(220, 12%, 40%);

  --font-heading:   'Space Grotesk', sans-serif;
  --font-body:      'Inter', sans-serif;

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

  --shadow-glow-primary: 0 0 40px var(--clr-primary-glow);
  --shadow-glow-accent:  0 0 40px var(--clr-accent-glow);
  --shadow-card:  0 8px 32px rgba(0,0,0,0.4);

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

  --navbar-w: 280px;
  --navbar-w-collapsed: 72px;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Scrollbar ───────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-primary); border-radius: 3px; }

/* ── Typography ──────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-primary);
  margin-bottom: 12px;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--clr-primary);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  background: linear-gradient(135deg, var(--clr-text) 0%, var(--clr-text-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 600px;
  line-height: 1.8;
}

/* ── Layout Containers ───────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 100px 0;
  position: relative;
}

/* ── Navigation ──────────────────────────────── */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(10, 12, 18, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: var(--clr-text);
}

.nav-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--clr-primary);
  box-shadow: 0 0 10px var(--clr-primary-glow);
  display: block;
}

.nav-logo-text {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--clr-text);
  background: var(--clr-surface-2);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--clr-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--clr-primary);
  color: #fff;
  transition: var(--transition);
  box-shadow: 0 4px 15px var(--clr-primary-glow);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--clr-primary-glow);
}

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* Mobile nav drawer */
.nav-drawer {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(10, 12, 18, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  flex-direction: column;
  padding: 20px;
  gap: 4px;
  z-index: 999;
  transform: translateY(-20px);
  opacity: 0;
  transition: var(--transition);
}
.nav-drawer.open {
  display: flex;
  transform: translateY(0);
  opacity: 1;
}
.nav-drawer a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-drawer a:hover { color: var(--clr-text); background: var(--clr-surface-2); }

/* ── HERO SECTION ────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  /* flex-start so content ALWAYS starts below the navbar, never overlaps */
  align-items: flex-start;
  overflow: hidden;
  /* Push content below the 72px fixed navbar */
  padding-top: 72px;
  padding-bottom: 40px;
  box-sizing: border-box;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
  /* padding-top keeps content away from the navbar edge on any viewport */
  padding: clamp(24px, 6vh, 60px) 40px 0;
  margin-left: 8vw;
  /* ensure content stays vertically centered in available space */
  margin-top: auto;
  margin-bottom: auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(129, 71, 255, 0.12);
  border: 1px solid rgba(129, 71, 255, 0.3);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-primary);
  letter-spacing: 0.08em;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero-badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--clr-accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.hero-greeting {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-text-muted);
  font-weight: 400;
  margin-bottom: 8px;
}

.hero-name {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  font-family: var(--font-heading);
  letter-spacing: -0.04em;
  line-height: 1.0;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 0%, hsl(220,20%,75%) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-role-line {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 500;
  color: var(--clr-text-muted);
  margin-bottom: 32px;
  min-height: 2em;
}

.hero-role-line .typed-text {
  color: var(--clr-accent);
  font-weight: 700;
}

.hero-role-line .cursor {
  display: inline-block;
  width: 3px;
  height: 1.2em;
  background: var(--clr-accent);
  border-radius: 2px;
  animation: blink-cursor 0.8s step-end infinite;
  vertical-align: middle;
  margin-left: 2px;
}

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

.hero-bio {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--clr-primary), hsl(230, 85%, 60%));
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition);
  box-shadow: 0 4px 20px var(--clr-primary-glow);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px var(--clr-primary-glow);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  transform: translateY(-3px);
}

.hero-socials {
  display: flex;
  gap: 12px;
}

.hero-socials a {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text-muted);
  font-size: 1rem;
  transition: var(--transition);
}
.hero-socials a:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(129,71,255,0.08);
  transform: translateY(-3px);
}

.hero-stats {
  position: absolute;
  bottom: 60px;
  right: 8vw;
  display: flex;
  gap: 32px;
  z-index: 2;
}

.hero-stat {
  text-align: center;
}
.hero-stat .number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}
.hero-stat .label {
  font-size: 0.75rem;
  color: var(--clr-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

.scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 2;
  color: var(--clr-text-dim);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.scroll-indicator .wheel {
  width: 24px;
  height: 38px;
  border: 2px solid var(--clr-border);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.scroll-indicator .wheel::after {
  content: '';
  width: 4px;
  height: 8px;
  background: var(--clr-primary);
  border-radius: 2px;
  animation: scroll-down 1.5s ease infinite;
}
@keyframes scroll-down {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ── ABOUT SECTION ───────────────────────────── */
#about {
  background: var(--clr-bg-2);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
  align-items: flex-start;
}

.about-image-wrap {
  position: relative;
  top: 0;
  align-self: flex-start;
}

.about-image-container {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  padding: 3px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.about-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: calc(var(--radius-xl) - 3px);
  display: block;
}

.about-image-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--clr-bg-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  backdrop-filter: blur(10px);
  text-align: center;
}
.about-image-badge .badge-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-primary);
  display: block;
  line-height: 1;
}
.about-image-badge .badge-lbl {
  font-size: 0.7rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.about-upwork-badge {
  position: absolute;
  top: 20px;
  right: -20px;
  background: linear-gradient(135deg, #14a800, #0d7c00);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(20,168,0,0.3);
}
.about-upwork-badge .ub-num {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  display: block;
  line-height: 1;
}
.about-upwork-badge .ub-lbl {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.8);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.about-content {}

.about-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 32px 0;
}

.about-info-item {
  padding: 14px 18px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
}
.about-info-item .info-label {
  font-size: 0.72rem;
  color: var(--clr-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.about-info-item .info-value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text);
}

.about-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 32px 0;
}

.about-stat-card {
  padding: 20px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
}
.about-stat-card:hover {
  border-color: var(--clr-primary);
  background: rgba(129,71,255,0.06);
}
.about-stat-card .stat-num {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--clr-primary);
  display: block;
}
.about-stat-card .stat-lbl {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  margin-top: 4px;
}

.about-actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
  flex-wrap: wrap;
}

/* ── SKILLS SECTION ──────────────────────────── */
#skills {
  background: var(--clr-bg);
}

.skills-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  margin-top: 56px;
}

.skills-col-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.skills-col-title::before {
  content:'';
  width: 3px;
  height: 18px;
  background: linear-gradient(var(--clr-primary), var(--clr-accent));
  border-radius: 2px;
}

.skill-bar-item {
  margin-bottom: 20px;
}
.skill-bar-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}
.skill-bar-name {
  font-size: 0.9rem;
  font-weight: 500;
}
.skill-bar-pct {
  font-size: 0.85rem;
  color: var(--clr-primary);
  font-weight: 600;
}
.skill-bar-track {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
}
.skill-bar-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  width: 0;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 10px var(--clr-primary-glow);
}

/* Tech Badges */
.tech-badges-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.tech-badge {
  padding: 6px 14px;
  border-radius: 100px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: var(--transition);
}
.tech-badge:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(129,71,255,0.07);
}

/* Language bars */
.lang-row {
  margin-bottom: 20px;
}
.lang-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}
.lang-name { font-size: 0.9rem; font-weight: 500; }
.lang-level { font-size: 0.8rem; color: var(--clr-accent); font-weight: 600; }
.lang-bar-track {
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}
.lang-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-primary));
  border-radius: 2px;
  width: 0;
  transition: width 1.5s ease;
}

/* ── EXPERIENCE SECTION ───────────────────────── */
#experience {
  background: var(--clr-bg-2);
}

.timeline {
  position: relative;
  margin-top: 56px;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--clr-primary), var(--clr-accent), transparent);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  opacity: 0;
  transform: translateX(-20px);
  transition: var(--transition-slow);
}
.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-dot {
  position: absolute;
  left: -40px;
  top: 20px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--clr-bg);
  border: 3px solid var(--clr-primary);
  box-shadow: 0 0 12px var(--clr-primary-glow);
  transition: var(--transition);
}
.timeline-item:hover .timeline-dot {
  background: var(--clr-primary);
  transform: scale(1.3);
}

.timeline-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}
.timeline-card:hover {
  border-color: rgba(129,71,255,0.3);
  background: var(--clr-surface-2);
  transform: translateX(6px);
  box-shadow: var(--shadow-card);
}

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

.timeline-company {
  display: flex;
  align-items: center;
  gap: 14px;
}

.timeline-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.4rem;
  overflow: hidden;
}

/* When the logo container has a real image, tighten padding */
.timeline-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  border-radius: 2px;
}

.timeline-company-name {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-bottom: 2px;
}
.timeline-role {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-text);
}

.timeline-period {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: rgba(129,71,255,0.1);
  border: 1px solid rgba(129,71,255,0.2);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--clr-primary);
  white-space: nowrap;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.timeline-tag {
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0,212,255,0.15);
  font-size: 0.75rem;
  color: var(--clr-accent);
  font-weight: 500;
}

/* ── EDUCATION SECTION ───────────────────────── */
#education {
  background: var(--clr-bg);
}

.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 56px;
}

.edu-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.edu-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  transform: scaleX(0);
  transition: var(--transition);
  transform-origin: left;
}
.edu-card:hover::before { transform: scaleX(1); }
.edu-card:hover {
  border-color: rgba(129,71,255,0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.edu-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.edu-img-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--clr-border);
  padding: 6px;
  margin-bottom: 16px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.edu-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.edu-degree {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 4px;
}
.edu-institution {
  font-size: 0.85rem;
  color: var(--clr-primary);
  font-weight: 500;
  margin-bottom: 8px;
}
.edu-year {
  font-size: 0.78rem;
  color: var(--clr-text-dim);
}
.edu-result {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.15);
  font-size: 0.78rem;
  color: var(--clr-accent);
}

/* ── CERTIFICATIONS SECTION ──────────────────── */
#certifications {
  background: var(--clr-bg-2);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 56px;
}

.cert-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  display: flex;
  align-items: flex-start;
  gap: 18px;
  position: relative;
  overflow: hidden;
}
.cert-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(129,71,255,0.06), transparent 60%);
  opacity: 0;
  transition: var(--transition);
}
.cert-card:hover::after { opacity: 1; }
.cert-card:hover {
  border-color: rgba(129,71,255,0.25);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.cert-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.cert-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.cert-icon-emoji {
  font-size: 1.8rem;
}

.cert-body {}
.cert-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 4px;
}
.cert-issuer {
  font-size: 0.82rem;
  color: var(--clr-primary);
  font-weight: 500;
  margin-bottom: 8px;
}
.cert-year {
  font-size: 0.78rem;
  color: var(--clr-text-dim);
}
.cert-badge-zce {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  padding: 4px 10px;
  border-radius: 100px;
  background: linear-gradient(135deg, rgba(129,71,255,0.15), rgba(0,212,255,0.08));
  border: 1px solid rgba(129,71,255,0.3);
  font-size: 0.72rem;
  color: var(--clr-primary);
  font-weight: 600;
}

/* ── AI & INNOVATION SECTION ─────────────────── */
#ai-section {
  background: var(--clr-bg);
  position: relative;
  overflow: hidden;
}

#ai-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(129,71,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-top: 56px;
}

.ai-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.ai-feature-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 22px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.ai-feature-card:hover {
  border-color: rgba(129,71,255,0.3);
  background: var(--clr-surface-2);
  transform: translateX(6px);
}

.ai-feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(129,71,255,0.12);
  border: 1px solid rgba(129,71,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.ai-feature-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 4px;
}
.ai-feature-desc {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

.ai-code-block {
  background: rgba(10, 12, 18, 0.8);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  font-family: 'Courier New', monospace;
  position: relative;
  overflow: hidden;
}
.ai-code-block::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(129,71,255,0.04), rgba(0,212,255,0.03));
  pointer-events: none;
}
.ai-code-dots {
  display: flex;
  gap: 6px;
  margin-bottom: 20px;
}
.ai-code-dots span {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.ai-code-dots span:nth-child(1) { background: #ff5f57; }
.ai-code-dots span:nth-child(2) { background: #febc2e; }
.ai-code-dots span:nth-child(3) { background: #28c840; }

.ai-code-line { margin: 4px 0; font-size: 0.82rem; }
.code-comment { color: #6a737d; }
.code-keyword { color: var(--clr-primary); }
.code-string { color: #9ecbff; }
.code-var { color: var(--clr-accent); }
.code-fn { color: hsl(45,95%,70%); }
.code-indent { padding-left: 20px; }
.code-indent2 { padding-left: 40px; }

/* ── UPWORK SECTION ──────────────────────────── */
#upwork {
  background: var(--clr-bg-2);
}

.upwork-card {
  background: linear-gradient(135deg, rgba(20, 168, 0, 0.08), rgba(20, 168, 0, 0.03));
  border: 1px solid rgba(20, 168, 0, 0.22);
  border-radius: var(--radius-xl);
  padding: 36px 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  overflow: hidden;
  margin-top: 48px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}
.upwork-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(20,168,0,0.08), transparent 70%);
  pointer-events: none;
}

.upwork-profile-header {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.upwork-avatar-wrap {
  position: relative;
  width: 60px;
  height: 60px;
  flex-shrink: 0;
}

.upwork-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #14a800;
  box-shadow: 0 4px 14px rgba(20,168,0,0.35);
  display: block;
}

.upwork-badge-icon {
  position: absolute;
  bottom: -2px;
  right: -2px;
  background: #14a800;
  color: #fff;
  font-size: 0.65rem;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--clr-surface);
  box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

.upwork-logo-box {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.upwork-logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: #14a800;
  font-family: var(--font-heading);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.upwork-title-sub {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--clr-text-muted);
}

.upwork-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  flex: 1;
  max-width: 620px;
  align-items: stretch;
}

.upwork-stat {
  background: rgba(20, 168, 0, 0.05);
  border: 1px solid rgba(20, 168, 0, 0.16);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: var(--transition);
  min-height: 78px;
}
.upwork-stat:hover {
  background: rgba(20, 168, 0, 0.12);
  border-color: rgba(20, 168, 0, 0.35);
  transform: translateY(-2px);
}

.upwork-stat .num {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: #14a800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  line-height: 1.2;
  margin-bottom: 3px;
  white-space: nowrap;
}

.upwork-stat .num .star-icon {
  color: #f59e0b;
  font-size: 0.85em;
}

.upwork-stat .num .badge-icon-inline {
  font-size: 0.82em;
  color: #14a800;
}

.upwork-stat .lbl {
  font-size: 0.68rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
}

.upwork-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: #14a800;
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  transition: var(--transition);
  flex-shrink: 0;
  white-space: nowrap;
}
.upwork-link:hover {
  background: #0d7c00;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(20,168,0,0.3);
}

/* ── PORTFOLIO SECTION ───────────────────────── */
#portfolio {
  background: var(--clr-bg);
}

.portfolio-filter {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 40px 0;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: 100px;
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover,
.filter-btn.active {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(129,71,255,0.08);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.portfolio-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  transition: var(--transition);
  position: relative;
  group: true;
}
.portfolio-item:hover {
  border-color: rgba(129,71,255,0.3);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.portfolio-thumb {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}
.portfolio-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.portfolio-item:hover .portfolio-thumb img {
  transform: scale(1.07);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(129,71,255,0.85), rgba(0,212,255,0.7));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}
.portfolio-item:hover .portfolio-overlay { opacity: 1; }

.portfolio-overlay-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}
.portfolio-overlay-link:hover {
  background: rgba(255,255,255,0.25);
}

.portfolio-info {
  padding: 20px;
}
.portfolio-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 6px;
}
.portfolio-desc {
  font-size: 0.83rem;
  color: var(--clr-text-muted);
  margin-bottom: 12px;
  line-height: 1.5;
}
.portfolio-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.portfolio-tech {
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(129,71,255,0.08);
  border: 1px solid rgba(129,71,255,0.15);
  font-size: 0.72rem;
  color: var(--clr-primary);
  font-weight: 500;
}

/* ── CONTACT SECTION ─────────────────────────── */
#contact {
  background: var(--clr-bg-2);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
  margin-top: 56px;
}

.contact-info-col {}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  transition: var(--transition);
}
.contact-info-item:hover {
  border-color: rgba(129,71,255,0.25);
  background: var(--clr-surface-2);
}
.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(129,71,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-info-label {
  font-size: 0.75rem;
  color: var(--clr-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.contact-info-value {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--clr-text);
}
.contact-info-value a {
  color: var(--clr-primary);
  transition: var(--transition);
}
.contact-info-value a:hover { text-decoration: underline; }

.contact-socials {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}
.contact-social-link {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--clr-text-muted);
  transition: var(--transition);
  text-decoration: none;
}
.contact-social-link:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(129,71,255,0.08);
  transform: translateY(-3px);
}

.contact-form-col {}

.contact-form {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  backdrop-filter: blur(10px);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: var(--clr-text);
  font-size: 0.9rem;
  font-family: var(--font-body);
  transition: var(--transition);
  outline: none;
}
.form-control:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px var(--clr-primary-glow);
}
.form-control::placeholder { color: var(--clr-text-dim); }

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

.form-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--clr-primary), hsl(230,85%,60%));
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: var(--font-body);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 20px var(--clr-primary-glow);
}
.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--clr-primary-glow);
}

#form-success {
  display: none;
  text-align: center;
  padding: 16px;
  background: rgba(20,168,0,0.1);
  border: 1px solid rgba(20,168,0,0.2);
  border-radius: var(--radius-md);
  color: #14a800;
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 12px;
}

/* ── FOOTER ──────────────────────────────────── */
footer {
  background: var(--clr-bg);
  border-top: 1px solid var(--clr-border);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-copy {
  font-size: 0.82rem;
  color: var(--clr-text-dim);
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 0.82rem;
  color: var(--clr-text-dim);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--clr-primary); }

/* ── SCROLL TO TOP ───────────────────────────── */
#scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--clr-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 990;
  border: none;
  box-shadow: 0 4px 15px var(--clr-primary-glow);
}
#scroll-top.visible {
  opacity: 1;
  pointer-events: all;
}
#scroll-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px var(--clr-primary-glow);
}

/* ── UTILITY CLASSES ─────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

.gradient-text {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── RESPONSIVE ──────────────────────────────── */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-image-wrap { max-width: 360px; margin: 0 auto; }
  .ai-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .upwork-card { flex-direction: column; gap: 32px; }
  .upwork-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { position: static; display: flex; gap: 24px; margin-top: 40px; flex-wrap: wrap; }
  .hero-content { margin-left: 0; padding: 0 24px; }
  #hero { padding: 100px 0 60px; }
}

@media (max-width: 768px) {
  section { padding: 70px 0; }
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  #navbar { padding: 0 20px; }

  .skills-layout { grid-template-columns: 1fr; gap: 40px; }
  .form-row { grid-template-columns: 1fr; }
  .about-stats-row { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .about-info-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 16px; }
  .hero-stat .number { font-size: 1.6rem; }
  .contact-form { padding: 24px; }
  .upwork-card { padding: 28px; }
  .upwork-stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .hero-name { font-size: clamp(2.4rem, 9vw, 4rem); }
  .portfolio-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .about-stats-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
  .edu-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .upwork-stats { grid-template-columns: 1fr 1fr; }
}

/* ── LOADING ANIMATION ───────────────────────── */
#page-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--clr-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#page-loader.hidden { opacity: 0; visibility: hidden; }

.loader-content {
  text-align: center;
}
.loader-logo {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 24px;
}
.loader-bar {
  width: 200px;
  height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto;
}
.loader-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  border-radius: 2px;
  animation: load-progress 1.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
@keyframes load-progress {
  from { width: 0; }
  to { width: 100%; }
}

/* ============================================
   HORIZONTAL SCROLL LAYOUT
   Converts the page to panel-by-panel
   horizontal scrolling on desktop.
   Falls back to vertical on mobile (≤ 768px).
   ============================================ */

/* ── Lock body / html when h-scroll is active ── */
html.h-scroll-active,
body.h-scroll-active {
  overflow: hidden;
  height: 100%;
}

/* ── The horizontal scroll container ──────────── */
#h-container {
  display: flex;
  flex-direction: row;
  width: 100vw;
  height: 100vh;
  overflow-x: scroll;
  overflow-y: hidden;
  /* JS ScrollEngine controls all scroll animation — no CSS scroll-behavior
     so the browser doesn't fight the rAF animation loop. */
  scroll-behavior: auto;
  /* Keep scroll-snap ONLY for native touch/swipe (mobile swipe gestures) */
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
#h-container::-webkit-scrollbar { display: none; } /* Chrome/Safari */

/* ── Each section/footer = one full-viewport panel ── */
#h-container > section,
#h-container > footer {
  min-width: 100vw;
  width: 100vw;
  height: 100vh;
  flex-shrink: 0;
  overflow-y: auto;          /* allow internal vertical scroll for tall content */
  overflow-x: hidden;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  /* Subtle inner scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--clr-primary) transparent;
}
#h-container > section::-webkit-scrollbar { width: 4px; }
#h-container > section::-webkit-scrollbar-thumb { background: var(--clr-primary); border-radius: 2px; }

/* Hero panel — no internal scroll, but must clear the fixed navbar */
#h-container > #hero {
  overflow-y: hidden;
  padding-top: 72px;
  box-sizing: border-box;
}

/* Fix: hero canvas fills its panel */
#h-container > #hero #hero-canvas {
  position: absolute;
  inset: 0;
}

/* ── Horizontal progress bar (bottom edge) ─────── */
#h-progress {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  z-index: 1100;
  border-radius: 0 2px 2px 0;
  transition: width 0.08s linear;
  pointer-events: none;
}

/* ── Section dot navigation (right edge) ──────── */
#section-dots {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1100;
  padding: 8px 4px;
}

.section-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  padding: 0;
  outline: none;
}

.section-dot:hover {
  background: var(--clr-primary);
  transform: scale(1.4);
  box-shadow: 0 0 10px var(--clr-primary-glow);
}

.section-dot.active {
  background: var(--clr-primary);
  width: 10px;
  height: 10px;
  box-shadow: 0 0 12px var(--clr-primary-glow);
}

/* Tooltip label on hover */
.section-dot[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: rgba(10, 12, 18, 0.92);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-size: 0.72rem;
  font-family: var(--font-body);
  font-weight: 500;
  white-space: nowrap;
  color: var(--clr-text);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
  backdrop-filter: blur(12px);
}
.section-dot:hover[data-tooltip]::after,
.section-dot.active[data-tooltip]::after {
  opacity: 1;
}

/* ── Keyboard hint on hero ─────────────────────── */
.h-scroll-hint {
  position: absolute;
  bottom: 96px;
  right: 48px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--clr-text-dim);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 3;
  animation: fade-hint 1s ease 3s forwards;
  opacity: 1;
  pointer-events: none;
}
.h-scroll-hint .key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 20px;
  border: 1px solid var(--clr-border);
  border-radius: 4px;
  background: var(--clr-surface);
  font-size: 0.7rem;
}
@keyframes fade-hint {
  to { opacity: 0; }
}

/* ============================================
   MOBILE FALLBACK  (≤ 768px)
   Revert entirely to normal vertical scroll.
   ============================================ */
@media (max-width: 768px) {
  html.h-scroll-active,
  body.h-scroll-active {
    overflow: auto;
    height: auto;
  }

  #h-container {
    display: block;
    width: auto;
    height: auto;
    overflow-x: hidden;
    overflow-y: visible;
    scroll-snap-type: none;
    flex-direction: unset;
  }

  #h-container > section,
  #h-container > footer {
    min-width: 100%;
    width: 100%;
    height: auto;
    min-height: auto;
    overflow-y: visible;
    overflow-x: hidden;
    scroll-snap-align: none;
    scroll-snap-stop: normal;
    flex-shrink: unset;
  }

  /* Restore hero full-height on mobile */
  #h-container > #hero {
    min-height: 100svh;
    overflow-y: hidden;
  }

  /* Hide desktop-only UI on mobile */
  #section-dots,
  #h-progress,
  .h-scroll-hint {
    display: none !important;
  }
}

/* ═══════════════════════════════════════════════
   PANEL TRANSITION — DIRECTIONAL SLIDER EFFECT
   Navigation forward: current section exits LEFT,
   new section enters from RIGHT.
   Navigation backward: current section exits RIGHT,
   new section enters from LEFT.
   ═══════════════════════════════════════════════ */

/* ── Keyframes ──────────────────────────────────── */

/* Outgoing: slide out to the LEFT (going forward) */
@keyframes slide-out-left {
  from { transform: translateX(0);     opacity: 1; }
  to   { transform: translateX(-8%);   opacity: 0; }
}

/* Outgoing: slide out to the RIGHT (going backward) */
@keyframes slide-out-right {
  from { transform: translateX(0);    opacity: 1; }
  to   { transform: translateX(8%);   opacity: 0; }
}

/* Incoming: slide in from the RIGHT (going forward) */
@keyframes slide-in-from-right {
  from { transform: translateX(8%);   opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* Incoming: slide in from the LEFT (going backward) */
@keyframes slide-in-from-left {
  from { transform: translateX(-8%);  opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* ── Transition duration token ──────────────────── */
:root {
  --slide-dur: 0.55s;
  --slide-ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── Apply to section content wrappers ─────────── */

/* OUTGOING — forward navigation (exit left) */
#h-container > section.panel-exit-left > .container,
#h-container > section.panel-exit-left > .hero-content {
  animation: slide-out-left var(--slide-dur) var(--slide-ease) both;
  pointer-events: none;
}

/* OUTGOING — backward navigation (exit right) */
#h-container > section.panel-exit-right > .container,
#h-container > section.panel-exit-right > .hero-content {
  animation: slide-out-right var(--slide-dur) var(--slide-ease) both;
  pointer-events: none;
}

/* INCOMING — forward navigation (enter from right) */
#h-container > section.panel-enter-from-right > .container,
#h-container > section.panel-enter-from-right > .hero-content {
  animation: slide-in-from-right var(--slide-dur) var(--slide-ease) both;
}

/* INCOMING — backward navigation (enter from left) */
#h-container > section.panel-enter-from-left > .container,
#h-container > section.panel-enter-from-left > .hero-content {
  animation: slide-in-from-left var(--slide-dur) var(--slide-ease) both;
}

/* Don't animate hero's THREE.js canvas wrapper itself */
#h-container > #hero.panel-exit-left > .container,
#h-container > #hero.panel-exit-right > .container,
#h-container > #hero.panel-enter-from-right > .container,
#h-container > #hero.panel-enter-from-left > .container {
  animation: none;
}