/* ============================================================
   musasayyed.com — executive personal site
   ============================================================ */

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

:root {
  --bg:        #0A0A14;
  --bg-2:      #0F0F1E;
  --bg-3:      #141428;
  --teal:      #0D7A8A;
  --teal-lt:   #4A9BAE;
  --gold:      #F0A500;
  --gold-dim:  #B87C00;
  --white:     #F4F4F6;
  --gray:      #9A9AB0;
  --gray-dim:  #5A5A72;
  --border:    rgba(255,255,255,0.08);

  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;

  --max-w: 1120px;
  --nav-h: 68px;
  --section-pad: 120px;
  --radius: 12px;

  --transition: 0.25s ease;
}

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

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal-lt);
  margin-bottom: 16px;
}

h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 48px;
}

/* ---------- Navigation ---------- */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: transparent;
  transition: background var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

#nav.scrolled {
  background: rgba(10, 10, 20, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--white);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray);
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--white); }

.nav-links .nav-cta {
  color: var(--teal-lt);
  border: 1px solid var(--teal);
  padding: 8px 20px;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition);
}

.nav-links .nav-cta:hover {
  background: var(--teal);
  color: var(--white);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ---------- Hero ---------- */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 70% 40%, rgba(13, 122, 138, 0.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 20% 70%, rgba(240, 165, 0, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

/* Subtle grid overlay */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 80px) 40px 80px;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal-lt);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s ease forwards;
}

.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 400;
  line-height: 1;
  color: var(--white);
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeUp 0.8s 0.35s ease forwards;
}

.hero-title {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 300;
  color: var(--gray);
  letter-spacing: 0.02em;
  margin-bottom: 8px;
  opacity: 0;
  animation: fadeUp 0.8s 0.5s ease forwards;
}

.hero-sub {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--teal-lt);
  text-transform: uppercase;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp 0.8s 0.6s ease forwards;
}

.hero-tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  color: rgba(244, 244, 246, 0.7);
  max-width: 560px;
  margin-bottom: 48px;
  opacity: 0;
  animation: fadeUp 0.8s 0.72s ease forwards;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s 0.85s ease forwards;
}

.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--teal);
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  letter-spacing: 0.04em;
  transition: background var(--transition), transform var(--transition);
}

.btn-primary:hover {
  background: var(--teal-lt);
  transform: translateY(-1px);
}

.btn-ghost {
  display: inline-block;
  padding: 14px 32px;
  border: 1px solid var(--border);
  color: var(--gray);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
  letter-spacing: 0.04em;
  transition: border-color var(--transition), color var(--transition);
}

.btn-ghost:hover {
  border-color: var(--gray-dim);
  color: var(--white);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--gray-dim);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeIn 1s 1.5s ease forwards;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gray-dim), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ---------- Stats Bar ---------- */
#stats {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 40px;
}

.stats-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  max-width: var(--max-w);
  margin: 0 auto;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 48px;
  text-align: center;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  color: var(--white);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

/* ---------- About ---------- */
#about {
  padding: var(--section-pad) 0;
  background: var(--bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 80px;
  align-items: start;
}

.about-text h2 {
  margin-bottom: 24px;
}

.about-text p {
  color: rgba(244, 244, 246, 0.75);
  margin-bottom: 20px;
  font-size: 1.05rem;
  line-height: 1.75;
}

.about-text a {
  color: var(--teal-lt);
  border-bottom: 1px solid rgba(74, 155, 174, 0.3);
  transition: border-color var(--transition);
}

.about-text a:hover { border-color: var(--teal-lt); }

.about-links {
  display: flex;
  gap: 28px;
  margin-top: 36px;
}

.text-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--teal-lt);
  letter-spacing: 0.04em;
  transition: color var(--transition);
}

.text-link:hover { color: var(--white); }

.about-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: sticky;
  top: calc(var(--nav-h) + 24px);
}

.aside-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.aside-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-lt);
  margin-bottom: 8px;
}

.aside-card p {
  font-size: 0.9rem;
  color: rgba(244, 244, 246, 0.8);
  line-height: 1.6;
}

/* ---------- Focus / Expertise ---------- */
#focus {
  padding: var(--section-pad) 0;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.focus-card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color var(--transition), transform var(--transition);
}

.focus-card:hover {
  border-color: rgba(13, 122, 138, 0.4);
  transform: translateY(-3px);
}

.focus-icon {
  width: 40px;
  height: 40px;
  color: var(--teal-lt);
  margin-bottom: 20px;
}

.focus-icon svg { width: 100%; height: 100%; }

.focus-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
  line-height: 1.3;
}

.focus-card p {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.7;
}

/* ---------- Selected Work ---------- */
#work {
  padding: var(--section-pad) 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.work-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 1px solid var(--border);
  margin-left: 16px;
}

.work-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 40px;
  padding: 36px 0 36px 48px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

/* Dot on timeline */
.work-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 44px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg-3);
  border: 1px solid var(--gray-dim);
  transition: background var(--transition), border-color var(--transition);
}

.work-item.featured::before {
  background: var(--teal);
  border-color: var(--teal);
  box-shadow: 0 0 12px rgba(13, 122, 138, 0.5);
}

.work-item:last-child { border-bottom: none; }

.work-meta {
  padding-top: 4px;
}

.work-year {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-dim);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.work-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal-lt);
  background: rgba(13, 122, 138, 0.12);
  border: 1px solid rgba(13, 122, 138, 0.3);
  border-radius: 4px;
  padding: 3px 8px;
}

.work-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
  line-height: 1.3;
}

.work-role {
  font-weight: 400;
  color: var(--gray);
  font-size: 0.95rem;
  margin-left: 8px;
}

.work-body > p {
  font-size: 0.95rem;
  color: rgba(244, 244, 246, 0.7);
  line-height: 1.75;
  margin-bottom: 20px;
}

.work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.work-tags span {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--gray);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
}

/* ---------- Contact ---------- */
#contact {
  padding: var(--section-pad) 0;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}

.contact-inner {
  max-width: 680px;
}

.contact-inner h2 { margin-bottom: 20px; }

.contact-sub {
  font-size: 1.05rem;
  color: rgba(244, 244, 246, 0.65);
  margin-bottom: 48px;
  line-height: 1.75;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray);
  padding: 16px 20px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color var(--transition), color var(--transition), transform var(--transition);
}

.contact-link:hover {
  border-color: rgba(13, 122, 138, 0.5);
  color: var(--white);
  transform: translateX(4px);
}

.contact-link svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--teal-lt);
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 40px;
  background: var(--bg);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-w);
  margin: 0 auto;
  font-size: 0.8rem;
  color: var(--gray-dim);
}

/* ---------- Animations ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scrollPulse {
  0%, 100% { transform: scaleY(1); opacity: 0.5; }
  50%       { transform: scaleY(1.3); opacity: 1; }
}

/* Scroll-reveal utility */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .container { padding: 0 28px; }
  .nav-inner { padding: 0 28px; }
  --section-pad: 80px;

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-aside { position: static; }

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

  .work-item { grid-template-columns: 140px 1fr; gap: 24px; }

  .stats-inner { gap: 0; }
  .stat { padding: 16px 28px; }
  .stat-divider { display: none; }
}

@media (max-width: 680px) {
  :root { --section-pad: 64px; }

  .container { padding: 0 20px; }
  .nav-inner { padding: 0 20px; }
  footer { padding: 24px 20px; }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(10, 10, 20, 0.97);
    flex-direction: column;
    padding: 32px 24px;
    gap: 24px;
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
  }

  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1rem; color: var(--white); }
  .nav-toggle { display: flex; }

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

  .work-item { grid-template-columns: 1fr; gap: 12px; padding-left: 32px; }
  .work-meta { display: flex; align-items: center; gap: 12px; }
  .work-year { margin-bottom: 0; }

  .stats-inner { flex-direction: column; gap: 0; }
  .stat-divider { display: none; }
  .stat { width: 100%; border-bottom: 1px solid var(--border); }
  .stat:last-child { border-bottom: none; }

  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-ghost { text-align: center; }

  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}