/* ── Variables ── */
:root {
  --bg: #f9fafb;
  --bg-alt: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --text-muted: #6b7280;
  --text-light: #9ca3af;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-subtle: #eff6ff;
  --hero-bg: #06060a;
  --hero-text: #f9fafb;
  --hero-muted: #9ca3af;
  --surface: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.05);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.12);
  --radius: 12px;
  --radius-sm: 8px;
  --max-w: 1100px;
  --nav-h: 64px;
  --accent-light: #93c5fd;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
input, button { font-family: inherit; }

/* ── Nav ── */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(6, 6, 10, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: background .3s, border-color .3s;
}
#nav.scrolled {
  background: rgba(255,255,255,.92);
  border-bottom: 1px solid var(--border);
}
#nav.scrolled .logo,
#nav.scrolled .nav-links a { color: var(--text); }
#nav.scrolled .nav-cta {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
}
.logo {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -.02em;
  color: #fff;
  transition: color .3s;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  color: rgba(255,255,255,.75);
  font-size: .875rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 8px;
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav-cta {
  border: 1px solid rgba(255,255,255,.25) !important;
  color: #fff !important;
  border-radius: 8px;
  padding: 6px 14px;
  transition: background .2s, border-color .2s !important;
}
.nav-cta:hover { background: rgba(255,255,255,.1) !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: background .3s;
}
#nav.scrolled .hamburger span { background: var(--text); }

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 12px 24px 20px;
  background: rgba(6,6,10,.97);
  border-top: 1px solid rgba(255,255,255,.06);
}
#nav.scrolled .mobile-menu {
  background: rgba(255,255,255,.97);
  border-top: 1px solid var(--border);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: rgba(255,255,255,.8);
  font-size: .95rem;
  font-weight: 500;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
#nav.scrolled .mobile-menu a { color: var(--text); border-bottom-color: var(--border); }
.mobile-menu a:last-child { border-bottom: none; }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--hero-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: calc(var(--nav-h) + 60px) 24px 80px;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,.06) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.18) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 760px;
}

.eyebrow {
  font-size: .875rem;
  font-weight: 500;
  color: var(--accent-light);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero-content h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  color: var(--hero-text);
  letter-spacing: -.04em;
  line-height: 1.0;
  margin-bottom: 20px;
}

.tagline {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--accent-light);
  letter-spacing: .08em;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--hero-muted);
  max-width: 540px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: .9rem;
  padding: 12px 24px;
  border-radius: 10px;
  border: 1px solid var(--accent);
  cursor: pointer;
  transition: background .2s, transform .15s, box-shadow .2s;
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37,99,235,.35);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: rgba(255,255,255,.8);
  font-weight: 600;
  font-size: .9rem;
  padding: 12px 24px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.2);
  cursor: pointer;
  transition: background .2s, border-color .2s, color .2s, transform .15s;
}
.btn-ghost:hover {
  background: rgba(255,255,255,.07);
  border-color: rgba(255,255,255,.4);
  color: #fff;
  transform: translateY(-1px);
}

/* ── Section Shared ── */
.section { padding: 96px 24px; }
.container { max-width: var(--max-w); margin: 0 auto; }

.section-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--text);
  margin-bottom: 48px;
  line-height: 1.15;
}

/* ── About ── */
.about { background: var(--bg-alt); }

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

.about-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 20px;
}
.about-text p:last-of-type { margin-bottom: 32px; }

.about-contact { display: flex; gap: 20px; flex-wrap: wrap; }
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--accent);
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color .2s, background .2s, transform .15s;
}
.contact-link:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
  transform: translateY(-1px);
}

.skills-wrap { }
.skills-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 16px;
}
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.skill {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  transition: border-color .2s, background .2s, color .2s;
}
.skill:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
  color: var(--accent);
}

/* ── Projects ── */
.projects { background: var(--bg); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: box-shadow .25s, transform .2s, border-color .2s;
  cursor: default;
}
.project-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: transparent;
}

.project-header { display: flex; align-items: center; justify-content: space-between; }

.project-tag {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 6px;
}
.tag-ai      { background: #ede9fe; color: #6d28d9; }
.tag-desktop { background: #d1fae5; color: #065f46; }
.tag-osint   { background: #fef3c7; color: #92400e; }
.tag-finance { background: #dbeafe; color: #1e40af; }
.tag-audio   { background: #fce7f3; color: #9d174d; }
.tag-pitch   { background: #f3f4f6; color: #374151; }

.project-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.02em;
}

.project-card p {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
}

.project-footer {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.tech {
  font-size: .72rem;
  font-weight: 600;
  color: var(--text-light);
  background: var(--bg);
  border-radius: 5px;
  padding: 3px 9px;
}

/* ── Experience ── */
.experience { background: var(--bg-alt); }

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 24px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding: 0 0 48px 36px;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -19px;
  top: 14px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-alt);
  box-shadow: 0 0 0 2px var(--accent);
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.timeline-year {
  font-size: .8rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: .05em;
}

.timeline-badge {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--accent-subtle);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 6px;
}

.timeline-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.02em;
  margin-bottom: 4px;
}

.timeline-company {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.timeline-body p:not(.timeline-company) {
  font-size: .95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── Email Section ── */
.email-section { background: var(--bg); }

.email-card {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
  border-radius: 20px;
  padding: 64px 56px;
  position: relative;
  overflow: hidden;
}
.email-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

.email-header { position: relative; z-index: 1; margin-bottom: 40px; }

.email-card .section-title { margin-bottom: 12px; }

.email-sub {
  font-size: 1rem;
  color: rgba(255,255,255,.6);
  max-width: 480px;
}

.email-form { position: relative; z-index: 1; }

.form-fields {
  display: flex;
  gap: 12px;
  align-items: stretch;
  flex-wrap: wrap;
}

.address-builder {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  flex-wrap: wrap;
}

.input-prefix-wrap {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 10px;
  overflow: hidden;
  flex: 1;
  min-width: 200px;
  transition: border-color .2s, background .2s;
}
.input-prefix-wrap:focus-within {
  border-color: rgba(255,255,255,.4);
  background: rgba(255,255,255,.12);
}

.input-prefix-wrap input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-size: .95rem;
  font-weight: 500;
  padding: 13px 14px;
}
.input-prefix-wrap input::placeholder { color: rgba(255,255,255,.35); }

.domain-badge {
  font-size: .85rem;
  font-weight: 600;
  color: rgba(255,255,255,.45);
  padding: 13px 14px 13px 0;
  white-space: nowrap;
  user-select: none;
}

.arrow-sep {
  font-size: 1.2rem;
  color: rgba(255,255,255,.3);
  flex-shrink: 0;
}

#gmail {
  flex: 1;
  min-width: 200px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 10px;
  color: #fff;
  font-size: .95rem;
  font-weight: 500;
  padding: 13px 16px;
  outline: none;
  transition: border-color .2s, background .2s;
}
#gmail::placeholder { color: rgba(255,255,255,.35); }
#gmail:focus {
  border-color: rgba(255,255,255,.4);
  background: rgba(255,255,255,.12);
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #fff;
  color: #0f172a;
  font-size: .9rem;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background .2s, transform .15s, box-shadow .2s;
  flex-shrink: 0;
}
.btn-submit:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,0,0,.2);
}
.btn-submit:disabled {
  opacity: .6;
  cursor: not-allowed;
  transform: none;
}

.btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(15,23,42,.3);
  border-top-color: #0f172a;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.form-status {
  margin-top: 16px;
  font-size: .875rem;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: 8px;
  position: relative;
  z-index: 1;
}
.form-status.success {
  background: rgba(16,185,129,.15);
  color: #6ee7b7;
  border: 1px solid rgba(16,185,129,.25);
}
.form-status.error {
  background: rgba(239,68,68,.12);
  color: #fca5a5;
  border: 1px solid rgba(239,68,68,.2);
}

.email-note {
  margin-top: 20px;
  font-size: .78rem;
  color: rgba(255,255,255,.3);
  position: relative;
  z-index: 1;
}

/* ── Contact ── */
.contact-section { background: var(--bg-alt); }

.contact-intro {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 480px;
}

.contact-email-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-subtle);
  border: 1px solid var(--accent);
  padding: 16px 28px;
  border-radius: var(--radius);
  transition: background .2s, transform .15s, box-shadow .2s;
}
.contact-email-btn:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,99,235,.3);
}

/* ── Footer ── */
footer {
  background: var(--hero-bg);
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 32px 24px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-links { display: flex; gap: 24px; }
.footer-links a {
  font-size: .85rem;
  font-weight: 500;
  color: rgba(255,255,255,.4);
  transition: color .2s;
}
.footer-links a:hover { color: rgba(255,255,255,.8); }
.footer-copy {
  font-size: .8rem;
  color: rgba(255,255,255,.25);
}
footer .logo { color: rgba(255,255,255,.5); }

/* ── Scroll Reveal ── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp .8s ease forwards;
  animation-delay: .2s;
}
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .email-card { padding: 48px 36px; }
}

@media (max-width: 680px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .projects-grid { grid-template-columns: 1fr; }
  .section { padding: 72px 20px; }
  .hero { padding: calc(var(--nav-h) + 40px) 20px 64px; }
  .email-card { padding: 36px 24px; }
  .form-fields { flex-direction: column; }
  .btn-submit { width: 100%; }
  .footer-inner { flex-direction: column; text-align: center; }
  .address-builder { flex-direction: column; }
  .arrow-sep { display: none; }
  #gmail { width: 100%; }
}