/*
 * layout.css — Navigation, Hero, Section wrappers
 * rizvee.github.io | Hasan Rizvee Portfolio
 * ==========================================
 */

/* ══════════════════════════════════════════
   NAVIGATION
   ══════════════════════════════════════════ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding-block: 1.25rem;
  transition:
    background-color var(--transition-slow),
    backdrop-filter var(--transition-slow),
    border-color var(--transition-slow),
    padding-block var(--transition-slow),
    box-shadow var(--transition-slow);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  background: rgba(8, 11, 18, 0.35);
  backdrop-filter: blur(18px) saturate(145%);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
}

.nav.scrolled {
  background: var(--bg-glass-cinematic);
  backdrop-filter: blur(20px) saturate(155%);
  -webkit-backdrop-filter: blur(20px) saturate(155%);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  padding-block: 0.9rem;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* Monogram logo */
.nav__logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
  letter-spacing: -0.04em;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  transition: color var(--transition-fast);
}

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

.nav__logo-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent);
  margin-bottom: 2px;
}

/* Desktop nav links */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: 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%;
}

/* Nav actions (right side) */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav__github {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  transition:
    color var(--transition),
    border-color var(--transition),
    background-color var(--transition);
}

.nav__github:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background-color: var(--accent-dim);
}

.nav__github svg {
  width: 16px;
  height: 16px;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

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

/* Mobile menu overlay */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-nav) - 1);
  background: rgba(8, 11, 18, 0.82);
  backdrop-filter: blur(22px) saturate(145%);
  -webkit-backdrop-filter: blur(22px) saturate(145%);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav__mobile.open {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: -0.03em;
  transition: color var(--transition-fast);
}

.nav__mobile-link:hover {
  color: var(--accent);
}

/* Mobile sticky CTA */
.nav__mobile-cta {
  margin-top: var(--space-6);
}


/* ══════════════════════════════════════════
   HERO
   ══════════════════════════════════════════ */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 80px; /* nav height */
}

/* Background layers */
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: var(--bg-void);
}

/* Radial glow behind profile */
.hero__glow {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 70% at 75% 50%, rgba(201, 168, 76, 0.09) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 30% 60%, rgba(74, 144, 217, 0.06) 0%, transparent 70%);
}

/* Subtle noise texture overlay */
.hero__noise {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px;
}

/* Hero content */
.hero__inner {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}

/* Left: text content */
.hero__content {
  max-width: 680px;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.hero__eyebrow-line {
  width: 32px;
  height: 1px;
  background-color: var(--accent);
  flex-shrink: 0;
}

.hero__name {
  margin-bottom: var(--space-4);
  line-height: 0.95;
}

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

/* Role pills row */
.hero__roles {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  align-items: center;
}

.hero__role-sep {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.hero__lead {
  margin-bottom: var(--space-8);
}

/* CTA row */
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  margin-bottom: var(--space-8);
}

/* Social row */
.hero__social {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.hero__social-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
  padding-right: var(--space-3);
  border-right: 1px solid var(--border-subtle);
}

/* Right: profile image */
.hero__image-wrap {
  position: relative;
  width: clamp(280px, 30vw, 420px);
  flex-shrink: 0;
}

.hero__image-frame {
  position: relative;
  width: 100%;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(145deg, rgba(201,168,76,0.06) 0%, rgba(74,144,217,0.04) 100%);
  border: 1px solid var(--border-subtle);
}

.hero__image-frame img {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
  z-index: 1;
  /* Reveal image naturally on transparent bg */
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.5));
}

/* Glow behind image */
.hero__image-glow {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 60px;
  background: var(--accent-glow);
  filter: blur(30px);
  z-index: 0;
  border-radius: 50%;
}

/* Floating credential badge */
.hero__badge {
  position: absolute;
  bottom: 2rem;
  left: -2rem;
  z-index: 5;
}

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: scrollBob 2.5s ease-in-out infinite;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

@keyframes scrollBob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}


/* ══════════════════════════════════════════
   STATS BAR
   ══════════════════════════════════════════ */

.stats-bar {
  padding-block: 3.5rem;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

.stats-bar__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}

.stat-item {
  text-align: center;
  padding-block: var(--space-4);
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 40px;
  width: 1px;
  background-color: var(--border-subtle);
}

.stat-item .stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: var(--space-2);
}

/* ── Cinematic Enhancements ──────────────── */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  background-image: url('../img/bg/noise.svg');
  opacity: 1;
}

.mesh-bg {
  position: absolute;
  inset: 0;
  background-image: url('../img/bg/cinematic-mesh.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  pointer-events: none;
  z-index: 1;
}