/* Group Olivo (groupolivo.com) — Olivo Ventures & Olivo Capital
   Modern CSS Architecture: Container Queries, Subgrid, Logical Properties,
   Dynamic Viewport Units, and Post-Interaction Form Validation (:user-invalid). */

:root {
  --bg-page: #f6f5ef;
  --bg-surface: #ffffff;
  --bg-elevated: #efede3;
  --bg-obsidian: #0c1512;
  --bg-obsidian-card: #13231d;
  --text-primary: #111d18;
  --text-secondary: #3f524a;
  --text-muted: #5d7068;
  --text-on-dark: #f4f6f4;
  --text-muted-on-dark: #9cb2a8;
  --accent-emerald: #185c43;
  --accent-emerald-bright: #268c67;
  --accent-gold: #9a7422;
  --accent-gold-bright: #d4af5a;
  --border-subtle: #dcd8c8;
  --border-strong: #c2bca6;
  --border-dark: #253d34;
  --danger: #c52828;
  --danger-bg: #fdecec;
  --success: #166534;
  --success-bg: #e8f8ee;
  --shadow-card: 0 10px 30px -10px rgba(12, 21, 18, 0.08);
  --shadow-lg: 0 22px 48px -12px rgba(12, 21, 18, 0.16);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-mono: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
}

html[data-theme="dark"] {
  --bg-page: #0a120f;
  --bg-surface: #111f1a;
  --bg-elevated: #172a23;
  --text-primary: #f2f5f3;
  --text-secondary: #b5c7be;
  --text-muted: #889e94;
  --accent-emerald: #34b384;
  --accent-gold: #dfbe6f;
  --border-subtle: #21382f;
  --border-strong: #325447;
  --danger: #f87171;
  --danger-bg: rgba(197, 40, 40, 0.18);
  --success: #4ade80;
  --success-bg: rgba(22, 101, 52, 0.22);
  --shadow-card: 0 12px 32px -8px rgba(0, 0, 0, 0.45);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-page);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-block-size: 100vh;
  min-block-size: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
}

img, svg, video {
  display: block;
  max-inline-size: 100%;
  block-size: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

h1, h2, h3, h4 {
  margin-block: 0 0.65rem;
  line-height: 1.18;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

p, li {
  text-wrap: pretty;
}

.serif-heading {
  font-family: var(--font-serif);
  font-weight: 600;
}

/* Top Institutional Utility Bar */
.utility-bar {
  background: var(--bg-obsidian);
  color: var(--text-muted-on-dark);
  border-block-end: 1px solid var(--border-dark);
  font-size: 0.78rem;
  padding-block: 0.5rem;
  padding-inline: clamp(1rem, 4vw, 3.5rem);
}

.utility-inner {
  max-inline-size: 1360px;
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  flex-wrap: balance;
  align-items: safe center;
  justify-content: space-between;
  gap: 0.75rem;
}

.utility-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: safe center;
  gap: 0.85rem;
}

.utility-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  background: rgba(212, 175, 90, 0.12);
  color: var(--accent-gold-bright);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  border: 1px solid rgba(212, 175, 90, 0.28);
}

.utility-links {
  display: flex;
  flex-wrap: wrap;
  align-items: safe center;
  gap: 1rem;
}

.utility-links a:hover {
  color: #ffffff;
}

/* Primary Sticky Header & Navigation */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg-surface) 92%, transparent);
  backdrop-filter: blur(14px);
  border-block-end: 1px solid var(--border-subtle);
  padding-inline: clamp(1rem, 4vw, 3.5rem);
}

.header-inner {
  max-inline-size: 1360px;
  margin-inline: auto;
  min-block-size: 4.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: safe center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.5rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-inline-size: 0;
}

.brand-link img {
  inline-size: 42px;
  block-size: 42px;
  aspect-ratio: 1 / 1;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-gold);
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  flex-wrap: balance;
  align-items: safe center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.42rem 0.72rem;
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

.nav-link[aria-current="page"] {
  color: var(--accent-emerald);
  background: color-mix(in srgb, var(--accent-emerald) 11%, transparent);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: safe center;
  gap: 0.6rem;
}

.theme-btn {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.68rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent-emerald);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(24, 92, 67, 0.25);
}

.btn-primary:hover {
  background: var(--accent-emerald-bright);
}

.btn-gold {
  background: linear-gradient(135deg, #c69f47 0%, #9a7422 100%);
  color: #ffffff;
}

.btn-outline {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: var(--bg-elevated);
}

.btn-dark-outline {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(212, 175, 90, 0.4);
  color: #ffffff;
}

.btn-dark-outline:hover {
  background: rgba(212, 175, 90, 0.16);
}

/* Layout Containers */
.section {
  padding-block: clamp(3.25rem, 6vw, 5.5rem);
  padding-inline: clamp(1rem, 4vw, 3.5rem);
}

.section-alt {
  background: var(--bg-elevated);
  border-block: 1px solid var(--border-subtle);
}

.section-obsidian {
  background: var(--bg-obsidian);
  color: var(--text-on-dark);
}

.container {
  max-inline-size: 1320px;
  margin-inline: auto;
}

/* Hero Section */
.hero {
  background: radial-gradient(circle at 82% 18%, rgba(46, 163, 120, 0.18), transparent 45%),
              radial-gradient(circle at 15% 80%, rgba(212, 175, 90, 0.14), transparent 48%),
              var(--bg-obsidian);
  color: var(--text-on-dark);
  padding-block: clamp(3.5rem, 7vw, 6rem);
  padding-inline: clamp(1rem, 4vw, 3.5rem);
  border-block-end: 1px solid var(--border-dark);
}

.hero-grid {
  max-inline-size: 1320px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 440px), 1fr));
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--accent-gold-bright);
  margin-block-end: 1rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: rgba(212, 175, 90, 0.12);
  border: 1px solid rgba(212, 175, 90, 0.3);
}

.eyebrow-light {
  color: var(--accent-emerald);
  background: color-mix(in srgb, var(--accent-emerald) 10%, transparent);
  border-color: color-mix(in srgb, var(--accent-emerald) 28%, transparent);
}

.hero h1 {
  font-size: clamp(2.15rem, 1.35rem + 3vw, 3.75rem);
  font-weight: 800;
  color: #ffffff;
  margin-block-end: 1.15rem;
}

.hero-lead {
  font-size: clamp(1.02rem, 0.94rem + 0.35vw, 1.2rem);
  color: var(--text-muted-on-dark);
  margin-block-end: 1.5rem;
  max-inline-size: 64ch;
}

.hero-quote {
  border-inline-start: 3px solid var(--accent-gold-bright);
  padding-inline-start: 1rem;
  margin-block: 1.25rem 1.75rem;
  font-style: italic;
  color: #dce7e2;
  font-size: 0.96rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-block-end: 2rem;
}

.hero-visual {
  aspect-ratio: 800 / 560;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-dark);
}

/* Metrics Bar */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1.25rem;
  margin-block-start: 2.75rem;
  padding-block-start: 2.25rem;
  border-block-start: 1px solid var(--border-dark);
}

.metric-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.metric-val {
  font-size: clamp(1.65rem, 1.2rem + 1.5vw, 2.35rem);
  font-weight: 800;
  color: var(--accent-gold-bright);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.metric-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: #ffffff;
  margin-block-start: 0.35rem;
}

.metric-note {
  font-size: 0.78rem;
  color: var(--text-muted-on-dark);
  margin-block-start: 0.2rem;
}

/* Section Headers */
.section-header {
  max-inline-size: 780px;
  margin-block-end: 2.75rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 1.25rem + 1.8vw, 2.65rem);
  font-weight: 800;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-block: 0.5rem 0;
}

/* Subgrid & Container-Query Card System */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 310px), 1fr));
  gap: 1.5rem;
}

.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 265px), 1fr));
  gap: 1.35rem;
}

.card-container {
  container-type: inline-size;
  display: grid;
  grid-row: span 3;
  grid-template-rows: subgrid;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.65rem;
  box-shadow: var(--shadow-card);
  display: grid;
  grid-row: span 3;
  grid-template-rows: subgrid;
  gap: 1rem;
  min-inline-size: 0;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-2px);
}

@container (min-width: 520px) {
  .card-adaptive {
    padding: 2.1rem;
  }
}

.card-badge-row {
  display: flex;
  flex-wrap: wrap;
  flex-wrap: balance;
  align-items: safe center;
  justify-content: space-between;
  gap: 0.5rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 600;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.badge-emerald {
  background: color-mix(in srgb, var(--accent-emerald) 12%, transparent);
  color: var(--accent-emerald);
  border-color: color-mix(in srgb, var(--accent-emerald) 30%, transparent);
}

.badge-gold {
  background: rgba(184, 147, 66, 0.14);
  color: var(--accent-gold);
  border-color: rgba(184, 147, 66, 0.35);
}

.card h3 {
  font-size: 1.28rem;
  font-weight: 700;
  margin-block: 0.35rem 0.5rem;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.94rem;
  margin: 0;
}

.card-meta-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
  display: grid;
  gap: 0.45rem;
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.card-meta-list li {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.card-meta-list li::before {
  content: "▪";
  color: var(--accent-gold);
  font-weight: bold;
}

.card-footer {
  padding-block-start: 0.9rem;
  border-block-start: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  align-items: safe center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.84rem;
  font-weight: 600;
}

.link-arrow {
  color: var(--accent-emerald);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
}

.link-arrow:hover {
  text-decoration: underline;
}

/* Data Tables */
.table-wrap {
  overflow-x: auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

table.data-table {
  inline-size: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  text-align: start;
}

.data-table th,
.data-table td {
  padding: 0.95rem 1.15rem;
  border-block-end: 1px solid var(--border-subtle);
  vertical-align: top;
}

.data-table th {
  background: var(--bg-elevated);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.data-table tr:last-child td {
  border-block-end: none;
}

/* Timeline */
.timeline {
  display: grid;
  gap: 1.5rem;
  position: relative;
  border-inline-start: 3px solid var(--accent-gold);
  padding-inline-start: 1.75rem;
  margin-inline-start: 0.5rem;
}

.timeline-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  position: relative;
  box-shadow: var(--shadow-card);
}

.timeline-item::before {
  content: "";
  position: absolute;
  inset-inline-start: -2.35rem;
  inset-block-start: 1.6rem;
  inline-size: 14px;
  block-size: 14px;
  border-radius: 999px;
  background: var(--accent-emerald);
  border: 3px solid var(--bg-page);
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Interactive Tools & Panels */
.interactive-panel {
  background: var(--bg-surface);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  box-shadow: var(--shadow-card);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  flex-wrap: balance;
  gap: 0.5rem;
  margin-block-end: 1.75rem;
}

.filter-btn {
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.filter-btn[aria-pressed="true"] {
  background: var(--accent-emerald);
  color: #ffffff;
  border-color: var(--accent-emerald);
}

/* Forms with Modern :user-invalid & :user-valid (validate-input-after-interaction) */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1.25rem;
}

.field {
  display: flex;
  flex-direction: column;
  margin-block-end: 1.15rem;
}

.field label {
  font-weight: 700;
  font-size: 0.9rem;
  margin-block-end: 0.2rem;
}

/* MANDATORY per modern-web-guidance validate-input-after-interaction:
   Place format hints above the input so autocomplete popovers do not cover them */
.field .hint {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-block-end: 0.38rem;
}

.field input,
.field select,
.field textarea {
  font: inherit;
  padding: 0.72rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-strong);
  background: var(--bg-page);
  color: var(--text-primary);
  inline-size: 100%;
}

.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  outline: 2px solid var(--accent-emerald);
  outline-offset: 1px;
}

.field .error-msg {
  display: none;
  color: var(--danger);
  font-size: 0.82rem;
  font-weight: 600;
  margin-block-start: 0.35rem;
}

.field input:user-invalid,
.field select:user-invalid,
.field textarea:user-invalid {
  border-color: var(--danger);
  background-color: var(--danger-bg);
}

.field input:user-invalid + .error-msg,
.field select:user-invalid + .error-msg,
.field textarea:user-invalid + .error-msg {
  display: block;
}

.field input:user-valid,
.field textarea:user-valid {
  border-color: var(--success);
}

/* Footer */
.site-footer {
  margin-block-start: auto;
  background: var(--bg-obsidian);
  color: var(--text-muted-on-dark);
  padding-block: 4rem 2.5rem;
  padding-inline: clamp(1rem, 4vw, 3.5rem);
  border-block-start: 2px solid var(--border-dark);
}

.footer-grid {
  max-inline-size: 1320px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.25rem;
  margin-block-end: 3rem;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 0.95rem;
  margin-block-end: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.55rem;
  font-size: 0.88rem;
}

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

.footer-bottom {
  max-inline-size: 1320px;
  margin-inline: auto;
  padding-block-start: 1.75rem;
  border-block-start: 1px solid var(--border-dark);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8rem;
}

.callout-box {
  background: color-mix(in srgb, var(--accent-emerald) 8%, var(--bg-surface));
  border-inline-start: 4px solid var(--accent-emerald);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  margin-block: 1.5rem;
}

details.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-block-end: 0.75rem;
}

details.faq-item summary {
  font-weight: 700;
  cursor: pointer;
  font-size: 1rem;
}

details.faq-item p {
  margin-block: 0.75rem 0;
  color: var(--text-secondary);
}

@media (max-width: 900px) {
  .header-inner {
    flex-direction: column;
    align-items: stretch;
  }
  .main-nav {
    justify-content: flex-start;
  }
}