@font-face {
  font-family: 'Freight Text Pro';
  src: url('fonts/FreightTextPro-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Freight Text Pro';
  src: url('fonts/FreightTextPro-Italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Freight Text Pro';
  src: url('fonts/FreightTextPro-Semibold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Freight Sans Pro';
  src: url('fonts/FreightSansPro-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Freight Sans Pro';
  src: url('fonts/FreightSansPro-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Freight Sans Pro';
  src: url('fonts/FreightSansPro-Semibold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #0a0a0a;
  --bg-card: #131313;
  --bg-card-hover: #1a1a1a;
  --border: rgba(255,255,255,0.18);
  --border-hover: rgba(255,255,255,0.32);
  --text-primary: #f0ede8;
  --text-secondary: #c8c5be;
  --text-tertiary: #666660;
  --accent: #d4c4a8;
  --accent-dim: rgba(212,196,168,0.22);
  --font-display: 'Freight Text Pro', serif;
  --font-body: 'Freight Text Pro', serif;
  --font-mono: 'Freight Sans Pro', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

/* Default */
.hljs {
  color: #c8d0d8;
}

/* Base */
pre code.hljs {
  background: transparent;
  font-style: normal;
}

.hljs-keyword {
  color: #e0d4b8;
  font-weight: bold;
  font-style: normal;
}

.hljs-type {
  color: #6db896;
}

.hljs-string {
  color: #e0d4b8;
}

.hljs-number {
  color: #f0956a;
}

/* Built-ins / functions — easter purple */
.hljs-built_in {
  color: #c89fd4;
  font-style: normal;
}

/* Variables / identifiers — warm site tan */
.hljs-variable,
.hljs-title,
.hljs-attr {
  color: #e0d4b8;
}

/* Literals (TRUE/FALSE/NULL) — copper orange */
.hljs-literal {
  color: #e8956a;
}

/* Comments — muted green */
.hljs-comment {
  color: #7ab368;
  font-style: normal;
}

/* Meta/decorators — muted purple */
.hljs-meta {
  color: #9d84b7;
}

html {
  overflow-y: scroll;
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

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

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  height: 56px;
  border-bottom: 1px solid var(--border);
  background: rgba(10,10,10,0.94);
  backdrop-filter: blur(12px);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  transition: opacity 0.2s;
}

.nav-logo:hover { opacity: 0.7; }

.nav-links {
  display: flex;
  gap: 0;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 0 1.2rem;
  height: 56px;
  line-height: 56px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.2s;
  position: relative;
}

.nav-links a:hover { color: var(--text-primary); }
.nav-links a.active { color: var(--accent); }

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 1.2rem; right: 1.2rem;
  height: 1px;
  background: var(--accent);
}

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

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--text-secondary);
  transition: background 0.2s;
}

.nav-hamburger:hover span { background: var(--text-primary); }

/* MOBILE NAV DRAWER */
.nav-drawer {
  display: none;
  position: fixed;
  top: 56px; left: 0; right: 0;
  background: rgba(10,10,10,0.98);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  padding: 1rem 0;
}

.nav-drawer.open { display: block; }

.nav-drawer a {
  display: block;
  padding: 0.85rem 2rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.nav-drawer a:hover { color: var(--text-primary); }
.nav-drawer a.active { color: var(--accent); }

/* LAYOUT */
.page-wrapper {
  max-width: 1100px;
  margin: 0 auto;
  padding: 120px 2rem 6rem;
}

/* HERO (home page) */
.hero {
  padding: 5rem 0 4rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 5rem;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 1.05;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.8;
}

/* PROJECT CARDS */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 5rem;
}

.card {
  background: var(--bg-card);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background 0.2s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.card:hover { background: var(--bg-card-hover); }

.card-preview {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--bg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 0.5rem;
  position: relative;
}

.card-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.3s;
}

.card-preview-placeholder {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-tertiary);
  text-transform: uppercase;
}

.card:hover .card-preview { border-color: var(--border-hover); }

.card-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 3px 8px;
  border: 1px solid var(--accent-dim);
  display: inline-block;
  width: fit-content;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-primary);
  line-height: 1.3;
}

.card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.card-arrow {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  transition: color 0.2s, transform 0.2s;
  display: inline-block;
}

.card:hover .card-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

/* LANGUAGE SECTION ON HOME */
.lang-section { margin-bottom: 5rem; }

.lang-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.lang-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--text-primary);
}

.lang-link {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.lang-link:hover { color: var(--accent); }

/* PAGE HEADER (language index pages) */
.page-header {
  padding-bottom: 3rem;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--border);
}

.page-header-eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.page-header-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.page-header-desc {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 900px;
  line-height: 1.8;
}

/* ABOUT PAGE */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.about-block-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.about-block p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 1rem;
}

.skills-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.skills-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.skills-list li:last-child { border-bottom: none; }
.skills-list .skill-name { color: var(--text-primary); }
.skills-list .skill-level {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}

/* CONTACT PAGE */
.contact-wrapper { max-width: 560px; }
.contact-field { margin-bottom: 1.5rem; }

.contact-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.contact-field input,
.contact-field textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.2s;
  resize: none;
}

.contact-field input:focus,
.contact-field textarea:focus { border-color: var(--accent); }
.contact-field textarea { min-height: 140px; }

.btn-submit {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--accent);
  border: none;
  padding: 0.85rem 2rem;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-submit:hover { opacity: 0.85; }

.contact-alt {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.contact-alt-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.contact-links { display: flex; gap: 2rem; }

.contact-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.contact-links a:hover { color: var(--accent); }

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer .foot-name {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
}

footer .foot-links { display: flex; gap: 2rem; }

footer .foot-links a {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
  transition: color 0.2s;
}

footer .foot-links a:hover { color: var(--accent); }

.form-success {
  display: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-top: 1rem;
}

/* ─── PROJECT PAGES ─────────────────────────────────── */

.project-hero {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}

.project-hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.project-hero-eyebrow a {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  transition: color 0.2s;
}

.project-hero-eyebrow a:hover { color: var(--accent); }

.project-hero-eyebrow span {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-tertiary);
}

.project-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.project-summary {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.9;
}

.project-meta {
  display: flex;
  gap: 3rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.meta-item-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.4rem;
}

.meta-item-value {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ANALYSIS BLOCK */
.analysis-block { margin-bottom: 5rem; }

.analysis-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 1.5rem;
}

.analysis-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

/* TOGGLE */
.toggle-bar {
  display: flex;
  border: 1px solid var(--border);
  width: fit-content;
  margin-bottom: 0;
}

.toggle-btn {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.55rem 1.4rem;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.toggle-btn.active {
  background: var(--accent);
  color: var(--bg);
}

.toggle-btn:not(.active):hover { color: var(--text-primary); }

.toggle-panel {
  display: none;
  border: 1px solid var(--border);
}

.toggle-panel.active { display: block; }

/* VISUALIZATION PANEL */
.viz-panel {
  background: var(--bg-card);
  min-height: 420px;
}

.viz-panel iframe {
  width: 100%;
  height: 480px;
  border: none;
  display: block;
}

.viz-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  gap: 0.75rem;
}

.viz-placeholder-text {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.viz-placeholder-sub {
  font-size: 12px;
  color: var(--text-tertiary);
  max-width: 340px;
  text-align: center;
  line-height: 1.7;
}

/* CODE PANEL */
.code-panel {
  background: #0d0d0d;
  overflow-x: auto;
}

.code-panel pre {
  margin: 0;
  padding: 2rem;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.8;
  color: #c9c9c0;
  white-space: pre-wrap;
}

.code-panel .kw  { color: #c8b89a; }
.code-panel .fn  { color: #8fbcbb; }
.code-panel .str { color: #a3be8c; }
.code-panel .cm  { color: #666660; font-style: italic; }
.code-panel .num { color: #b48ead; }

/* FINDINGS */
.findings { padding: 2rem 0 0; }

.findings-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}

.findings p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.9;
  max-width: 720px;
}

sup {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--accent);
  margin-left: 1px;
}

/* FOOTNOTES */
.findings .meta-footnote {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 1rem;
  line-height: 1.6;
}

/* SECTION DIVIDER */
.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 4rem 0;
}

/* REFERENCES */
.references {
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--border);
}

.references-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 1.5rem;
}

.references ol {
  list-style: decimal;
  padding-left: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.references li {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.references a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ─── MOBILE ─────────────────────────────────── */
@media (max-width: 768px) {

  nav {
    padding: 0 1.5rem;
  }

  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .page-wrapper {
    padding: 90px 1.25rem 4rem;
  }

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

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .project-meta {
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .hero {
    padding: 3rem 0 2.5rem;
  }

  .skills-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .skills-list .skill-level {
    text-align: left;
  }

  footer {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.5rem;
  }

  /* SQL: Tableau JS embed — force reasonable height */
  .tableauPlaceholder object {
    width: 100% !important;
    height: 400px !important;
  }

  /* Python: Plotly iframe */
  .viz-panel iframe {
    height: 500px;
  }

  /* R: static image — collapse dead space */
  .viz-panel img {
    width: 100%;
    height: auto;
    display: block;
  }

  .viz-panel {
    min-height: unset;
  }
}