/* Level Up Your Learning — shared styles matching mock-ups */

:root {
  --bg: #15131f;
  --bg-elevated: #191627;
  --bg-card: #1e1b2b;
  --border: #2b2740;
  --border-hover: #3a3456;
  --text: #f6f4ef;
  --text-muted: #a49dbe;
  --text-dim: #8f88a8;
  --text-faint: #6b6484;
  --text-footer: #5c5677;
  --accent: #8b7dff;
  --accent-hover: #a396ff;
  --accent-dark: #5a4fc0;
  --accent-text: #a99cff;
  --green: #4fd18b;
  --green-border: #2f5a45;
  --orange: #ff9f6b;
  --blue: #6bc9ff;
  --card-light: #f6f4ef;
  --card-light-text: #2c2839;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-pixel: 'Silkscreen', monospace;
  --font-body: 'IBM Plex Sans', sans-serif;
  --max-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
}

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

a:hover { color: #c7bfff; }

img { max-width: 100%; display: block; }

/* Navigation */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(21, 19, 31, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.site-logo {
  font-family: var(--font-pixel);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.site-nav-links {
  display: flex;
  gap: 26px;
  align-items: center;
  font-size: 14px;
  color: var(--text-muted);
}

.site-nav-links a:hover { color: var(--text); }

.btn {
  display: inline-block;
  font-family: var(--font-pixel);
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 18px 30px;
  border-radius: 3px;
  border: none;
  cursor: pointer;
  text-align: center;
  transition: transform 0.1s, background 0.15s, box-shadow 0.1s;
}

.btn:active {
  transform: translateY(3px);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 4px 0 var(--accent-dark);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--bg);
}

.btn-primary:active {
  box-shadow: 0 1px 0 var(--accent-dark);
}

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

.btn-secondary:hover {
  border-color: var(--accent);
  color: #c7bfff;
}

.btn-nav {
  font-size: 10px;
  padding: 11px 18px;
}

.btn-sm {
  font-size: 11px;
  padding: 16px 26px;
}

.btn-sm:active {
  box-shadow: 0 1px 0 var(--accent-dark);
}

.section-label {
  font-family: var(--font-pixel);
  font-size: 10px;
  letter-spacing: 0.16em;
  margin-bottom: 14px;
}

.section-label.green { color: var(--green); }
.section-label.orange { color: var(--orange); }
.section-label.blue { color: var(--blue); }

.section-title {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px;
}

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

.site-footer {
  border-top: 1px solid var(--border);
  padding: 26px 32px;
  text-align: center;
  font-family: var(--font-pixel);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--text-footer);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 72px 0;
  border-top: 1px solid var(--border);
}

.section.alt-bg {
  background: var(--bg-elevated);
}

/* Form elements */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-family: var(--font-pixel);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 14px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  min-height: 90px;
  resize: vertical;
}

.form-error {
  color: #ff7a6b;
  font-size: 13px;
  margin-top: 8px;
  font-family: var(--font-body);
}

.form-success {
  color: var(--green);
  font-size: 14px;
  font-family: var(--font-body);
  line-height: 1.6;
}

.hidden { display: none !important; }

@keyframes blink {
  0%, 55% { opacity: 1; }
  56%, 100% { opacity: 0.15; }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

/* Social share buttons */
.share-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.share-btn {
  font-family: var(--font-pixel);
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 14px 20px;
  border-radius: 3px;
  border: 1px solid var(--border-hover);
  background: transparent;
  color: var(--accent-text);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  line-height: 1.2;
  transition: border-color 0.15s, color 0.15s;
}

a.share-btn:hover {
  color: #c7bfff;
}

.share-btn.is-disabled,
.share-btn[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
  cursor: not-allowed;
}

.share-btn:hover {
  border-color: var(--accent);
  color: #c7bfff;
}

.share-btn.facebook:hover { border-color: #4267B2; color: #4267B2; }
.share-btn.twitter:hover { border-color: #1DA1F2; color: #1DA1F2; }
.share-btn.linkedin:hover { border-color: #0A66C2; color: #0A66C2; }
.share-btn.bluesky:hover { border-color: #0085ff; color: #0085ff; }

@media (max-width: 768px) {
  .site-nav-inner,
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .site-nav-links {
    gap: 16px;
    font-size: 13px;
  }

  .btn {
    padding: 16px 24px;
  }
}