/* Vocab Trivia & Vocab Trivia Pro - Official Web Theme
   02. Fjord Slate & Linen — Intellectual, Airy & Meditative
   Responsive, Accessible, Semantic CSS with dark mode support */

:root {
  --bg-color: #F2F3F0;
  --surface-color: #F9F9F7;
  --surface-secondary: #E3E5E0;
  --text-primary: #162E38;
  --text-secondary: #5F6C72;
  --text-muted: #64747C;
  --primary: #244A5A;
  --primary-hover: #162E38;
  --primary-light: #E3EDF1;
  --primary-border: #C5D8DF;
  --accent: #33657A;
  --accent-hover: #244A5A;
  --accent-light: #E3EDF1;
  --border-color: #D5D8D4;
  --border-subtle: #E3E5E0;
  --card-shadow: 0 10px 30px -10px rgba(36, 74, 90, 0.08);
  --header-bg: rgba(249, 249, 247, 0.92);
  --code-bg: #E6E8E4;
  --font-serif: "Cormorant Garamond", "Charter", Georgia, "Times New Roman", serif;
  --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #11171B;
    --surface-color: #182126;
    --surface-secondary: #222E36;
    --text-primary: #EAECEF;
    --text-secondary: #95A4AE;
    --text-muted: #687882;
    --primary: #8AB8CA;
    --primary-hover: #A8CBD8;
    --primary-light: #1C2D36;
    --primary-border: #335262;
    --accent: #8AB8CA;
    --accent-hover: #A8CBD8;
    --accent-light: #1C2D36;
    --border-color: #27353F;
    --border-subtle: #1E2931;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
    --header-bg: rgba(17, 23, 27, 0.92);
    --code-bg: #222E36;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.68;
  font-weight: 400;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Header & Navigation */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
}

.header-container {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 22.5%;
  background: #244A5A;
  border: 1px solid rgba(197, 216, 223, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #F9F9F7;
  font-size: 1.3rem;
  box-shadow: 0 2px 8px rgba(36, 74, 90, 0.22);
  position: relative;
  flex-shrink: 0;
}

.brand-icon svg {
  width: 28px;
  height: 28px;
  display: block;
}


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

.brand-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primary);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
}

nav.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

nav.site-nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.925rem;
  font-weight: 500;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  transition: all 0.2s ease;
}

nav.site-nav a:hover,
nav.site-nav a.active {
  color: var(--primary);
  background-color: var(--primary-light);
}

/* Main Container */
main.site-content {
  flex: 1;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

/* Hero Section */
.hero {
  text-align: center;
  margin-bottom: 3.5rem;
  padding: 2.5rem 1.5rem;
  background: radial-gradient(circle at 50% 30%, var(--primary-light) 0%, transparent 70%);
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  background-color: var(--accent-light);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  border: 1px solid var(--primary-border);
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 1.75rem;
}

.button-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(45, 106, 79, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-accent {
  background-color: var(--accent);
  color: #FFFFFF;
}

.btn-accent:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background-color: var(--surface-secondary);
  border-color: var(--primary);
  color: var(--primary);
}

/* Cards & Grid */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.75rem;
  box-shadow: var(--card-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(45, 106, 79, 0.1);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.card-icon {
  font-size: 1.5rem;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

/* Page Header (for content pages) */
.page-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  color: var(--primary);
  line-height: 1.25;
  margin-bottom: 0.5rem;
}

.page-header .meta-info {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.page-header .meta-info span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* Typography & Content Sections */
.content-section {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--card-shadow);
}

.content-section h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--primary);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border-subtle);
}

.content-section h2:first-of-type {
  margin-top: 0;
}

.content-section h3 {
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.content-section p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.content-section ul,
.content-section ol {
  color: var(--text-secondary);
  margin-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.content-section li {
  margin-bottom: 0.4rem;
}

.content-section strong {
  color: var(--text-primary);
}

a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}

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

/* Badges & Pills */
.pill {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.pill-green {
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

.pill-gold {
  background-color: var(--accent-light);
  color: var(--accent);
  border: 1px solid var(--primary-border);
}

/* Callouts / Alerts */
.callout {
  padding: 1.25rem 1.5rem;
  border-radius: 12px;
  margin: 1.5rem 0;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.callout-icon {
  font-size: 1.35rem;
  line-height: 1;
}

.callout-body {
  flex: 1;
  font-size: 0.95rem;
}

.callout-body p {
  margin-bottom: 0.5rem;
}

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

.callout-info {
  background-color: var(--primary-light);
  border: 1px solid var(--primary-border);
  color: var(--text-primary);
}

.callout-warning {
  background-color: var(--accent-light);
  border: 1px solid rgba(200, 146, 42, 0.35);
  color: var(--text-primary);
}

/* Code & Schemas */
code {
  font-family: var(--font-mono);
  background-color: var(--code-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 5px;
  font-size: 0.875em;
  color: var(--text-primary);
}

pre {
  background-color: var(--code-bg);
  padding: 1rem;
  border-radius: 10px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border-color);
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 1.5rem 0;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.925rem;
}

th {
  background-color: var(--surface-secondary);
  color: var(--text-primary);
  font-weight: 600;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

tr:last-child td {
  border-bottom: none;
}

/* Stepper / Steps list */
.step-list {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
  counter-reset: step-counter;
}

.step-item {
  position: relative;
  padding-left: 3.5rem;
  margin-bottom: 1.75rem;
}

.step-item::before {
  counter-increment: step-counter;
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.25rem;
  height: 2.25rem;
  background-color: var(--primary);
  color: #FAF6F0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 2px 6px rgba(45, 106, 79, 0.25);
}

.step-item h4 {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.step-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

/* Footer */
footer.site-footer {
  background-color: var(--surface-color);
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 1.5rem;
  margin-top: auto;
}

.footer-container {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-decoration: none;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.825rem;
  color: var(--text-muted);
}

/* Responsive adjustments */
@media (max-width: 680px) {
  .hero h1 {
    font-size: 2rem;
  }
  .header-container {
    flex-direction: column;
    align-items: flex-start;
  }
  nav.site-nav {
    width: 100%;
    justify-content: space-between;
  }
  .content-section {
    padding: 1.5rem 1.25rem;
  }
  .step-item {
    padding-left: 2.75rem;
  }
  .step-item::before {
    width: 1.85rem;
    height: 1.85rem;
    font-size: 0.85rem;
  }
}