/*
 * layout.css — Navigation, Hero, Section wrappers
 * Esthyak Ahmmed Siyam 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;
}