/* Design tokens */
:root {
  --color-bg: #161826;
  --color-surface: #232532;
  --color-text: #e9e9ed;
  --color-accent: #9184d9;
  --color-accent-300: #d2cefd;
  --color-divider: color-mix(in srgb, #e9e9ed 16%, transparent);

  --color-neutral-100: #f3f5fe;
  --color-neutral-200: #e4e7f5;
  --color-neutral-300: #cfd3e5;
  --color-neutral-500: #9397ab;
  --color-neutral-700: #595d6c;

  --font-heading: "Inter", system-ui, sans-serif;
  --font-heading-weight: 500;
  --font-body: "Inter", system-ui, sans-serif;

  --space-1: 2.8px;
  --space-2: 5.6px;
  --space-3: 8.4px;
  --space-4: 11.2px;
  --space-5: 14px;
  --space-6: 16.8px;
  --space-7: 19.6px;
  --space-8: 22.4px;
  --space-9: 25.2px;

  --radius-md: 8px;
  --radius-lg: 14px;

  --shadow-sm: 0 0 0 1px #3f424d;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 var(--space-2);
}
h1 { font-size: 42px; }
h2 { font-size: 32px; }
h3 { font-size: 25px; }
h4 { font-size: 20px; }
h5 { font-size: 16px; }
h6 { font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; }

p { margin: 0 0 var(--space-3); }
a { color: var(--color-accent-300); text-decoration: none; text-underline-offset: 3px; }
a:hover { color: var(--color-accent); text-decoration: underline; }
img { display: block; max-width: 100%; }

:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

/* — layout — */
.section { padding: var(--space-9) var(--space-7); max-width: 1080px; margin: 0 auto; }
.lede { font-size: 18px; line-height: 1.75; color: var(--color-neutral-100); max-width: 760px; }
.kicker {
  color: var(--color-accent-300); font-family: var(--font-heading); font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase; font-size: 13px; margin: 0 0 var(--space-3) 0;
}
.fade-rule {
  height: 1px; width: 100%;
  background: linear-gradient(90deg, var(--color-neutral-500) 0, var(--color-neutral-500) 48px, transparent 48px);
  margin-bottom: var(--space-6);
}

/* — buttons — */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 14px; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid transparent;
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: var(--radius-md);
}
.btn-primary { color: var(--color-accent); border-color: var(--color-accent); }
.btn-primary:hover { background: color-mix(in srgb, var(--color-accent) 12%, transparent); }
.btn-primary:active { background: color-mix(in srgb, var(--color-accent) 22%, transparent); }
.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 14%, transparent); }
.btn-ghost { color: var(--color-accent); padding-inline: var(--space-1); }
.btn-ghost:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-ghost:active { background: color-mix(in srgb, var(--color-accent) 18%, transparent); }

/* — cards — */
.card {
  display: flex; flex-direction: column; gap: var(--space-2);
  padding: var(--space-3); border-radius: var(--radius-md); background: var(--color-surface);
}
.card-kicker { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent); }
.card-title { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 17px; line-height: 1.2; margin: 0; }
.card-body { margin: 0; font-size: 13px; opacity: 0.8; flex: 1; }
.elev-sm { box-shadow: var(--shadow-sm); }
.card-featured { border: 1px solid var(--color-accent); }

/* — tags — */
.tag {
  display: inline-flex; align-items: center; font-size: 11px;
  letter-spacing: 0.02em; padding: 3px 10px; border-radius: calc(var(--radius-md) * 0.75);
}
.tag-outline { border: 1px solid var(--color-accent); color: var(--color-accent); }

/* — navigation — */
.nav {
  display: flex; align-items: center; gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  position: sticky; top: 0; z-index: 10; backdrop-filter: blur(8px);
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
}
.nav-brand { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 18px; margin-right: auto; }
.nav a { color: inherit; text-decoration: none; font-size: 14px; }
.nav a:hover, .nav a[aria-current='page'] { color: var(--color-accent); }
.nav-links { display: flex; gap: var(--space-6); align-items: center; margin-left: auto; flex-wrap: wrap; }

/* — hero — */
.hero-section {
  padding: var(--space-9) var(--space-7); max-width: 1080px; margin: 0 auto;
  display: grid; grid-template-columns: 1.3fr 0.9fr; gap: var(--space-8); align-items: center;
}
.hero-title {
  font-family: var(--font-heading); font-weight: 500; font-size: clamp(32px, 6vw, 56px);
  line-height: 1.05; color: var(--color-text); margin: 0 0 var(--space-3) 0;
}
.hero-role {
  font-family: var(--font-heading); font-weight: 500; font-size: 18px;
  color: var(--color-accent-300); margin: 0 0 var(--space-4) 0;
}
.hero-tagline {
  font-family: var(--font-heading); font-weight: 500; font-size: 24px;
  line-height: 1.3; color: var(--color-text); margin: 0 0 var(--space-5) 0;
}
.hero-lede { font-size: 18px; line-height: 1.6; color: var(--color-neutral-200); max-width: 560px; margin: 0 0 var(--space-6) 0; }
.hero-media { width: 280px; height: 280px; border-radius: var(--radius-lg); overflow: hidden; justify-self: end; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-actions { display: flex; gap: var(--space-4); flex-wrap: wrap; }

/* — experience — */
.exp-list { display: flex; flex-direction: column; }
.exp-row {
  display: grid; grid-template-columns: 180px 1fr; gap: var(--space-6);
  padding: var(--space-5) 0; border-bottom: 1px solid var(--color-neutral-700);
}
.exp-dates { font-size: 14px; color: var(--color-neutral-300); }
.exp-role { font-size: 19px; margin: 0 0 4px 0; }
.exp-company { font-size: 14px; color: var(--color-accent-300); margin-bottom: var(--space-3); }
.exp-desc { font-size: 15px; line-height: 1.6; color: var(--color-neutral-200); margin: 0; max-width: 640px; }

/* — skills — */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--space-6); }
.skill-title { font-size: 15px; color: var(--color-neutral-100); margin: 0 0 var(--space-3) 0; }
.skill-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* — projects — */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-5); }

/* — education — */
.edu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); }

/* — awards — */
.awards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 340px)); gap: var(--space-5); }
.award-gallery { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-2); }
.award-photo { height: 160px; width: auto; max-width: 100%; border-radius: var(--radius-md); cursor: zoom-in; }

/* — lightbox — */
.lightbox {
  position: fixed; inset: 0; z-index: 1000; display: none;
  align-items: center; justify-content: center;
  padding: var(--space-6);
  background: color-mix(in srgb, #000 80%, transparent);
}
.lightbox.is-open { display: flex; }
.lightbox-figure {
  margin: 0; max-width: 100%; max-height: 90vh;
  display: flex; flex-direction: column; align-items: center;
}
.lightbox-img { max-width: 100%; max-height: 80vh; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.lightbox-caption {
  margin-top: var(--space-3); max-width: 600px;
  font-size: 14px; color: var(--color-neutral-200); text-align: center;
}
.lightbox-close {
  position: absolute; top: var(--space-6); right: var(--space-6);
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  font-size: 24px; line-height: 1; color: var(--color-text);
  background: color-mix(in srgb, var(--color-surface) 90%, transparent);
  border: 1px solid var(--color-divider); border-radius: 50%; cursor: pointer;
}
.lightbox-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; display: flex; align-items: center; justify-content: center;
  font-size: 22px; line-height: 1; color: var(--color-text);
  background: color-mix(in srgb, var(--color-surface) 90%, transparent);
  border: 1px solid var(--color-divider); border-radius: 50%; cursor: pointer;
}
.lightbox-prev { left: var(--space-6); }
.lightbox-next { right: var(--space-6); }

/* — footer — */
.site-footer { padding: var(--space-9) var(--space-7); border-top: 1px solid var(--color-neutral-700); margin-top: var(--space-8); }
.footer-inner { padding: 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-6); }
.footer-title { font-size: 28px; margin: 0 0 var(--space-4) 0; }
.footer-meta { display: flex; flex-direction: column; gap: var(--space-2); font-size: 14px; color: var(--color-neutral-200); }

/* — responsive — */
@media (max-width: 860px) {
  .hero-section { grid-template-columns: 1fr; }
  .hero-media { justify-self: start; width: 180px; height: 180px; }
  .edu-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .section, .hero-section { padding-left: var(--space-4); padding-right: var(--space-4); }
  .nav { flex-wrap: wrap; row-gap: var(--space-2); }
  .nav-links { margin-left: 0; width: 100%; gap: var(--space-4); }
  .exp-row { grid-template-columns: 1fr; gap: var(--space-1); }
}