/* ============================================
   NAZRUL ISLAM — PORTFOLIO
   Aesthetic: Dark luxury editorial with 
   geometric gold accents & cinematic motion
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=DM+Mono:wght@300;400;500&family=Bebas+Neue&display=swap');

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

:root {
  --bg:        #080808;
  --surface:   #111111;
  --surface2:  #181818;
  --border:    rgba(255,255,255,0.07);
  --gold:      #C9A84C;
  --gold-dim:  #8B6E2E;
  --gold-glow: rgba(201,168,76,0.15);
  --white:     #F5F0E8;
  --muted:     #6B6560;
  --text:      #C8C0B4;

  --font-display: 'Bebas Neue', sans-serif;
  --font-serif:   'Cormorant Garamond', serif;
  --font-mono:    'DM Mono', monospace;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out:   cubic-bezier(0.76, 0, 0.24, 1);
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-serif);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
  cursor: none;
}

/* ── CUSTOM CURSOR ── */
.cursor {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
}
.cursor-dot {
  width: 8px; height: 8px;
  background: var(--gold);
  border-radius: 50%;
  position: fixed;
  top: 0; left: 0;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s;
}
.cursor-ring {
  width: 36px; height: 36px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  position: fixed;
  top: 0; left: 0;
  transform: translate(-50%, -50%);
  transition: transform 0.12s var(--ease-out-expo), width 0.3s, height 0.3s, opacity 0.3s;
  opacity: 0.6;
}
body:hover .cursor-dot { opacity: 1; }
.cursor-ring.expand { width: 60px; height: 60px; opacity: 0.3; }

/* ── NOISE OVERLAY ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.35;
}

/* ── NAVIGATION ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  padding: 0 3rem;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s, background 0.4s;
}
nav.scrolled {
  background: rgba(8,8,8,0.92);
  backdrop-filter: blur(20px);
  border-color: var(--border);
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.12em;
  color: var(--white);
  text-decoration: none;
  position: relative;
}
.nav-logo span { color: var(--gold); }
.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  position: relative;
  transition: color 0.3s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width 0.3s var(--ease-out-expo);
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 24px; height: 1px;
  background: var(--white);
  transition: 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 490;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  transform: translateY(-100%);
  transition: transform 0.5s var(--ease-out-expo);
}
.mobile-menu.open { transform: translateY(0); }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: 3rem;
  letter-spacing: 0.1em;
  color: var(--white);
  text-decoration: none;
  transition: color 0.3s;
}
.mobile-menu a:hover { color: var(--gold); }

/* ── UTILITIES ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.section { padding: 8rem 0; }

.label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.label::before {
  content: '';
  width: 2rem; height: 1px;
  background: var(--gold);
  flex-shrink: 0;
}

.headline {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 7rem);
  line-height: 0.92;
  letter-spacing: 0.02em;
  color: var(--white);
}
.headline em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gold);
  font-size: 0.85em;
}

.subheadline {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text);
  font-weight: 300;
  max-width: 560px;
  line-height: 1.75;
}

.gold-line {
  width: 3rem; height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin: 2rem 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 1rem 2rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  background: transparent;
  position: relative;
  overflow: hidden;
  transition: color 0.4s;
  cursor: none;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-in-out);
}
.btn:hover { color: var(--bg); }
.btn:hover::before { transform: scaleX(1); }
.btn span { position: relative; z-index: 1; }
.btn svg { position: relative; z-index: 1; }

.btn-ghost {
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost::before { background: var(--surface2); }
.btn-ghost:hover { color: var(--white); }

/* ── GOLD DIVIDER ── */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.3;
  margin: 4rem 0;
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.footer-socials {
  display: flex;
  gap: 1.5rem;
}
.footer-socials a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.3s;
}
.footer-socials a:hover { color: var(--gold); }

/* ── SCROLL ANIMATIONS ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}
.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; }

/* ── PAGE LOADER ── */
.loader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  transition: opacity 0.8s, visibility 0.8s;
}
.loader.hidden { opacity: 0; visibility: hidden; }
.loader-name {
  font-family: var(--font-display);
  font-size: 2.5rem;
  letter-spacing: 0.3em;
  color: var(--white);
}
.loader-name span { color: var(--gold); }
.loader-bar {
  width: 200px; height: 1px;
  background: var(--border);
  position: relative;
  overflow: hidden;
}
.loader-bar::after {
  content: '';
  position: absolute;
  left: -100%; top: 0;
  width: 100%; height: 100%;
  background: var(--gold);
  animation: load 1.4s var(--ease-out-expo) forwards;
}
@keyframes load {
  to { left: 0; }
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  nav { padding: 0 1.5rem; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .section { padding: 5rem 0; }
  .container { padding: 0 1.25rem; }
}