/* Portfolio — sober, refined; theme: dark | light (set via JS + localStorage) */

html[data-theme="dark"] {
  --bg: #0a0b0e;
  --bg-elevated: #101218;
  --surface: #141821;
  --surface-strong: #181e2a;
  --surface-hover: #1a2230;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #f0f2f6;
  --text-secondary: #a8b0c0;
  --muted: #7a8494;
  --accent: #c9a962;
  --accent-2: #6fb7c8;
  --accent-soft: rgba(201, 169, 98, 0.12);
  --accent-glow: rgba(201, 169, 98, 0.25);
  --line: linear-gradient(90deg, transparent, var(--accent), transparent);
  --shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
  --grain: 0.03;
}

html[data-theme="light"] {
  --bg: #f7f5f0;
  --bg-elevated: #ffffff;
  --surface: #ffffff;
  --surface-strong: #fbfaf7;
  --surface-hover: #faf8f4;
  --border: rgba(20, 24, 32, 0.08);
  --border-strong: rgba(20, 24, 32, 0.14);
  --text: #1a1d24;
  --text-secondary: #4a5060;
  --muted: #6b7280;
  --accent: #8b6914;
  --accent-2: #256f7f;
  --accent-soft: rgba(139, 105, 20, 0.1);
  --accent-glow: rgba(139, 105, 20, 0.2);
  --line: linear-gradient(90deg, transparent, var(--accent), transparent);
  --shadow: 0 20px 40px rgba(26, 29, 36, 0.08);
  --grain: 0.02;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Source Sans 3", system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  font-weight: 400;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Ambient background */
.bg-ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.bg-ambient::before {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-soft), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(100, 120, 160, 0.06), transparent 45%),
    radial-gradient(ellipse 50% 35% at 0% 80%, rgba(201, 169, 98, 0.05), transparent 40%);
}

.bg-ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: var(--grain);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* Top bar */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  max-width: 1120px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.brand-mark {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
}

.theme-group {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.theme-group span[aria-hidden="true"] {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding: 0 0.35rem 0 0.65rem;
}

.theme-btn {
  font-family: inherit;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.45rem 0.65rem;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}

.theme-btn:hover {
  color: var(--text);
}

.theme-btn.is-active {
  background: var(--accent-soft);
  color: var(--accent);
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

/* Hero */
.hero {
  margin-bottom: 3.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: 800px;
}

.hero-eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.hero h1 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 500;
  line-height: 1.12;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.hero-role {
  font-size: clamp(1.1rem, 2vw, 1.28rem);
  color: var(--text-secondary);
  font-weight: 500;
  margin: 0 0 0.75rem;
}

.hero-value {
  max-width: 740px;
  margin: 0 0 1.35rem;
  color: var(--text-secondary);
  font-size: 1rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}

.status-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #3d9a5c;
  box-shadow: 0 0 8px rgba(61, 154, 92, 0.6);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.proof-strip {
  display: grid;
  gap: 0.85rem;
  margin-top: -1.5rem;
}

@media (min-width: 760px) {
  .proof-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.proof-strip div,
.path-card,
.preview-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.proof-strip div {
  padding: 1rem 1.1rem;
}

.proof-strip strong {
  display: block;
  color: var(--accent);
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.35rem;
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.proof-strip span {
  display: block;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.65rem 1.25rem;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border: 1px solid transparent;
}

html[data-theme="light"] .btn-primary {
  color: #fff;
}

.btn-primary:hover {
  filter: brightness(1.08);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Section */
.section {
  margin-bottom: 3rem;
}

.feature-section {
  margin-top: -0.5rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.section-head h2 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.5rem;
  font-weight: 500;
  margin: 0;
  letter-spacing: 0.02em;
  color: var(--text);
}

.section-line {
  flex: 1;
  height: 1px;
  background: var(--line);
  opacity: 0.5;
  min-width: 2rem;
}

.prose {
  color: var(--text-secondary);
  font-size: 0.98rem;
  max-width: 68ch;
}

.prose p {
  margin: 0 0 1rem;
}

.prose p:last-child {
  margin-bottom: 0;
}

.service-grid,
.capability-grid,
.case-grid,
.process-grid,
.path-grid,
.preview-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 760px) {
  .service-grid,
  .capability-grid,
  .case-grid,
  .path-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .service-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .case-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .preview-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.service-card,
.capability-card,
.case-card,
.process-grid div {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  padding: 1.15rem 1.2rem;
}

.service-card h3,
.capability-card h3,
.case-card h3 {
  margin: 0 0 0.55rem;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.25;
}

.service-card p,
.capability-card p,
.process-grid p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.path-card,
.preview-card {
  padding: 1.2rem;
}

.path-card h3,
.preview-card h3 {
  margin: 0.25rem 0 0.6rem;
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.2;
}

.path-card p,
.preview-card p {
  margin: 0 0 1rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.feature-panel {
  display: grid;
  gap: 1.25rem;
  padding: clamp(1.25rem, 3vw, 1.8rem);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background:
    linear-gradient(135deg, var(--accent-soft), transparent 42%),
    linear-gradient(180deg, var(--surface-strong), var(--surface));
  box-shadow: var(--shadow);
}

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

@media (min-width: 820px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.feature-panel h3 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(1.55rem, 3vw, 2rem);
  line-height: 1.1;
  font-weight: 600;
  margin: 0.15rem 0 0.6rem;
}

.feature-panel p {
  max-width: 72ch;
  margin: 0;
  color: var(--text-secondary);
}

.feature-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.case-card dl {
  display: grid;
  gap: 0.75rem;
  margin: 0;
}

.case-card div {
  display: grid;
  gap: 0.2rem;
}

.case-card dt {
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.case-card dd {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.5;
}

.case-table {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.case-row {
  display: grid;
  gap: 0.65rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.case-row span,
.case-row strong {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
}

.case-row strong {
  color: var(--text);
}

.case-header {
  display: none;
}

@media (min-width: 900px) {
  .case-row {
    grid-template-columns: 0.85fr 1.2fr 1.35fr 1.2fr;
    align-items: start;
  }

  .case-header {
    display: grid;
    background: transparent;
    border-color: var(--border-strong);
  }

  .case-header span {
    color: var(--accent);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }
}

.preview-window {
  margin-bottom: 1rem;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--surface-strong);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.preview-window img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

@media (min-width: 820px) {
  .process-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.process-grid span {
  display: block;
  color: var(--accent);
  font-family: ui-monospace, monospace;
  font-size: 0.78rem;
  margin-bottom: 0.5rem;
}

.contact-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: clamp(1.25rem, 3vw, 1.7rem);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--surface);
}

.contact-panel h2 {
  margin: 0 0 0.35rem;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.45rem;
}

.contact-panel p {
  margin: 0;
  color: var(--text-secondary);
  max-width: 60ch;
}

@media (max-width: 760px) {
  .contact-panel {
    display: block;
  }
}

/* Capability tags */
.tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
}

/* Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.timeline-block {
  position: relative;
  padding-left: 1.25rem;
  border-left: 2px solid var(--border-strong);
}

.timeline-block::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.35rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--bg);
}

.timeline-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  margin: 0 0 0.25rem;
}

.timeline-meta {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.timeline ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.timeline li {
  margin-bottom: 0.5rem;
}

.timeline li:last-child {
  margin-bottom: 0;
}

.subheading {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 1.5rem 0 0.75rem;
}

.subheading:first-of-type {
  margin-top: 0;
}

/* Achievements */
.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.check-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.65rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.compact-list {
  margin-top: 1rem;
}

.compact-list li {
  font-size: 0.88rem;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--accent);
  transform: rotate(45deg);
}

/* Project cards */
.cards {
  display: grid;
  gap: 1rem;
}

@media (min-width: 700px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1000px) {
  .cards.cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.35rem 1.4rem;
  text-decoration: none;
  color: inherit;
  min-height: 100%;
  transition: background 0.25s, border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.card:hover {
  border-color: var(--border-strong);
  background: var(--surface-hover);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.card-featured {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  background:
    linear-gradient(155deg, var(--accent-soft), transparent 55%),
    var(--surface);
}

.card-featured .card-title {
  color: var(--accent);
}

.card-kicker {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.card-title {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.35rem;
  color: var(--text);
}

.card-url {
  font-size: 0.75rem;
  font-family: ui-monospace, monospace;
  color: var(--muted);
  word-break: break-all;
  margin-bottom: 0.6rem;
}

.card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* Tech strip */
.tech-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tech-strip .tag {
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
}

/* Two columns */
.grid-2 {
  display: grid;
  gap: 2rem;
}

@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.edu-card,
.lang-card {
  padding: 1.25rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.edu-card h3,
.lang-card h3 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.edu-card p,
.lang-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.lang-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.note {
  font-size: 0.88rem;
  color: var(--muted);
  padding: 1rem 1.15rem;
  border-radius: 8px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
}

footer.site-footer {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
}

footer.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

footer.site-footer a:hover {
  text-decoration: underline;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Guide page */
.guide-page .wrap {
  max-width: 720px;
}

.guide-page h1 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.75rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.guide-page h2 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 1.5rem 0 0.75rem;
  color: var(--text);
}

.guide-page ul {
  padding-left: 1.25rem;
  color: var(--text-secondary);
}

.guide-page li {
  margin-bottom: 0.5rem;
}

.warn {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  margin: 1rem 0;
  color: var(--text-secondary);
}

.back {
  display: inline-block;
  margin-bottom: 1.5rem;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}

.back:hover {
  text-decoration: underline;
}