/* ===== THEME TOKENS ===== */
:root {
  --navy: #2952E3;
  --navy-deep: #1F3864;
  --teal: #0FBFA6;

  --bg: #FAFAF8;
  --bg-alt: #F1F3F6;
  --bg-card: #FFFFFF;
  --text: #14161C;
  --muted: #5B6472;
  --border: #E3E7ED;
  --shadow: 0 20px 40px -20px rgba(20, 22, 28, 0.12);

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --max-width: 1120px;
  --radius: 16px;
}

html[data-theme="dark"] {
  --bg: #0A0E17;
  --bg-alt: #0F1524;
  --bg-card: #131A2B;
  --text: #E9EDF5;
  --muted: #8B96AB;
  --border: #212C42;
  --navy: #6C8CFF;
  --navy-deep: #A9BBFF;
  --teal: #2DE2C6;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  transition: background 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { padding-left: 0; }

::selection { background: var(--teal); color: #04120F; }

/* Noise texture overlay for depth */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* Scroll progress bar */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--navy), var(--teal));
  z-index: 1001;
  transition: width 0.1s ease-out;
}

/* ===== NAV ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
}
.logo-dot { color: var(--teal); }

.nav-links {
  display: flex;
  gap: 8px;
  flex: 1;
  justify-content: center;
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  padding: 8px 14px;
  border-radius: 999px;
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover, .nav-link.active {
  color: var(--text);
  background: var(--bg-alt);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.3s, background 0.2s;
}
.theme-toggle:hover { transform: rotate(20deg); }
.icon-moon { display: none; }
html[data-theme="dark"] .icon-sun { display: none; }
html[data-theme="dark"] .icon-moon { display: block; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-body);
  transition: all 0.25s cubic-bezier(.2,.8,.2,1);
  border: 1px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: linear-gradient(135deg, var(--navy), var(--teal));
  color: #fff;
  box-shadow: 0 8px 24px -8px color-mix(in srgb, var(--navy) 60%, transparent);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -10px color-mix(in srgb, var(--navy) 65%, transparent); }
.btn-outline {
  border-color: var(--border);
  color: var(--text);
  background: var(--bg-card);
}
.btn-outline:hover { border-color: var(--navy); color: var(--navy); }
.btn-small { padding: 9px 20px; font-size: 13px; background: var(--bg-alt); border: 1px solid var(--border); color: var(--text); }
.btn-small:hover { border-color: var(--navy); color: var(--navy); }
.btn-full { width: 100%; }

/* ===== HERO ===== */
.hero {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 90px 24px 100px;
  text-align: center;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--border) 60%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--border) 60%, transparent) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 30%, black 20%, transparent 75%);
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}
.glow-1 { width: 420px; height: 420px; background: var(--navy); top: -120px; left: 10%; }
.glow-2 { width: 380px; height: 380px; background: var(--teal); top: 60px; right: 8%; opacity: 0.25; }

.hero-inner { display: flex; flex-direction: column; align-items: center; }

.hero-photo-wrap {
  position: relative;
  width: 168px;
  height: 168px;
  margin-bottom: 28px;
}
.photo-ring {
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, var(--navy), var(--teal), var(--navy));
  animation: spin 6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hero-photo {
  position: relative;
  width: 168px;
  height: 168px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 15%;
  border: 4px solid var(--bg);
  z-index: 1;
}
.status-badge {
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--shadow);
  z-index: 2;
}
.status-dot {
  width: 7px; height: 7px;
  background: var(--teal);
  border-radius: 50%;
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--teal) 60%, transparent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--teal) 50%, transparent); }
  70% { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
  background: linear-gradient(135deg, var(--text), var(--text) 40%, var(--navy));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-role {
  font-family: var(--font-display);
  font-size: clamp(18px, 3vw, 24px);
  font-weight: 600;
  color: var(--navy);
  margin: 0 0 20px;
  min-height: 32px;
}
.cursor { animation: blink 1s step-start infinite; color: var(--teal); }
@keyframes blink { 50% { opacity: 0; } }

.lead {
  font-size: 17px;
  color: var(--muted);
  max-width: 560px;
  margin: 0 0 36px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  margin-bottom: 32px;
  flex-wrap: wrap;
  justify-content: center;
}
.hero-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 50px;
}
.hero-link {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s;
}
.hero-link:hover { color: var(--navy); }

.scroll-cue {
  width: 26px;
  height: 42px;
  border: 2px solid var(--border);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.scroll-cue span {
  width: 4px; height: 8px;
  background: var(--navy);
  border-radius: 2px;
  animation: scrollcue 1.6s infinite;
}
@keyframes scrollcue {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(14px); opacity: 0; }
}

/* ===== SECTIONS ===== */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 100px 24px;
}
.section.alt { max-width: 100%; background: var(--bg-alt); }
.section.alt > * { max-width: var(--max-width); margin-left: auto; margin-right: auto; }

.section-head { margin-bottom: 48px; max-width: 640px; }
.section-head.center { max-width: 640px; margin-left: auto; margin-right: auto; text-align: center; }
.section-eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy);
  margin: 0 0 10px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}
.section-text {
  font-size: 16px;
  color: var(--muted);
  margin: 14px 0 0;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: start;
}
.about-text { font-size: 17px; color: var(--muted); margin: 0; }

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.stat {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.stat:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--navy); }
.stat-num, .stat-suffix {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  color: var(--navy);
}
.stat-label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

/* ===== SKILLS ===== */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.skill-group h3 {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--navy);
  margin: 0 0 14px;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chips span {
  font-size: 12.5px;
  font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 13px;
  border-radius: 999px;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.chips span:hover { border-color: var(--navy); color: var(--navy); transform: translateY(-2px); }

/* ===== TIMELINE ===== */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-left: 28px;
  border-left: 2px solid var(--border);
}
.timeline-item { position: relative; }
.timeline-dot {
  position: absolute;
  left: -34px;
  top: 6px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--navy);
  box-shadow: 0 0 0 4px var(--bg-alt);
}
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.25s, box-shadow 0.25s;
}
.timeline-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.timeline-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
}
.timeline-head h3 { font-family: var(--font-display); font-size: 18px; margin: 0; }
.timeline-date { font-size: 13px; color: var(--muted); white-space: nowrap; }
.timeline-org { font-size: 14px; color: var(--navy); margin: 4px 0 14px; font-weight: 500; }
.timeline ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 14.5px; }
.timeline li { margin-bottom: 6px; }

/* ===== CARDS (WORK) ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: transform 0.3s cubic-bezier(.2,.8,.2,1), box-shadow 0.3s, border-color 0.3s;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--navy);
}
.card-top { display: flex; justify-content: space-between; align-items: flex-start; }
.card-tag {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card-arrow { color: var(--muted); transition: transform 0.25s, color 0.25s; }
.card:hover .card-arrow { transform: translate(3px, -3px); color: var(--navy); }
.card h3 { font-family: var(--font-display); font-size: 20px; margin: 12px 0 8px; }
.card-meta { font-size: 13px; color: var(--muted); margin: 0 0 14px; }
.card-text { font-size: 14.5px; color: var(--muted); margin: 0 0 18px; }

/* ===== CERTIFICATIONS / EDUCATION ===== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cert {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.25s, box-shadow 0.25s;
}
.cert:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.cert-featured { border-color: var(--navy); background: color-mix(in srgb, var(--navy) 6%, var(--bg-card)); }
.cert-icon { font-size: 26px; display: block; margin-bottom: 12px; }
.cert h3 { font-family: var(--font-display); font-size: 16px; margin: 0 0 8px; }
.cert-meta { font-size: 13px; color: var(--navy); margin: 0 0 10px; font-weight: 500; }
.cert-text { font-size: 14px; color: var(--muted); margin: 0; }

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 40px;
  margin-top: 48px;
}
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 15px;
  padding: 16px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.2s, transform 0.2s;
}
.contact-item:hover { border-color: var(--navy); transform: translateX(4px); }
.contact-label {
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--navy);
}

.contact-form { display: flex; flex-direction: column; gap: 16px; }
.contact-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; }
.contact-form input, .contact-form textarea {
  font-family: var(--font-body);
  font-size: 14px;
  padding: 13px 15px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-card);
  color: var(--text);
  resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--navy) 18%, transparent);
}
.form-hint { font-size: 12px; color: var(--muted); margin: 0; }

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 44px 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}
.footer p { margin: 4px 0; }

/* ===== SCROLL REVEAL ===== */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(.2,.7,.3,1), transform 0.7s cubic-bezier(.2,.7,.3,1);
}
[data-reveal].in-view { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    gap: 6px;
  }
  .nav-toggle { display: flex; }
  .btn-small { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .skill-grid { grid-template-columns: 1fr 1fr; }
  .cards { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .skill-grid { grid-template-columns: 1fr; }
  .hero-links { flex-direction: column; align-items: center; gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}