/* ---------- Base Theme Variables ---------- */

:root {
  --bg: #050814;
  --bg-alt: #0d1224;
  --text: #f5f5f5;
  --muted: #b0b3c1;
  --accent: #33cccc;
  --accent-soft: rgba(51, 204, 204, 0.15);
  --secondary: #cc7722;
  --card-bg: #0f1628;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.55);
  --radius-lg: 18px;
  --radius-pill: 999px;
  --transition-fast: 0.2s ease;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", sans-serif;
}

[data-theme="light"] {
  --bg: #f4f5fb;
  --bg-alt: #ffffff;
  --text: #111827;
  --muted: #4b5563;
  --accent: #0a3d91;
  --accent-soft: rgba(10, 61, 145, 0.12);
  --secondary: #cc7722;
  --card-bg: #ffffff;
  --border-subtle: rgba(15, 23, 42, 0.08);
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.08);
}

/* ---------- Global ---------- */

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background: radial-gradient(circle at top, #13213a 0, var(--bg) 40%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- Layout ---------- */

.page-content {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 96px 20px 72px;
  flex: 1;
}

/* ---------- Header & Nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: 1080px;
  margin: 0 auto;
  background: linear-gradient(
    to bottom,
    rgba(5, 8, 20, 0.98),
    rgba(5, 8, 20, 0.92)
  );
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-img {
  height: 40px;
  width: auto;
  border-radius: 999px;
  box-shadow: 0 0 18px rgba(51, 204, 204, 0.18);
}

.logo-text {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.82rem;
  color: var(--muted);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-link {
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 999px;
  transition: background var(--transition-fast), color var(--transition-fast),
    transform var(--transition-fast);
}

.nav-link:hover {
  background: var(--accent-soft);
  color: var(--text);
  transform: translateY(-1px);
}

.nav-link.active {
  background: var(--accent-soft);
  color: var(--accent);
}

/* ---------- Theme Toggle ---------- */

.theme-toggle {
  border: 1px solid var(--border-subtle);
  background: var(--card-bg);
  color: var(--text);
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

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

/* ---------- Hero ---------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: 32px;
  align-items: center;
  margin-bottom: 40px;
}

.hero-text h1 {
  font-size: clamp(1.9rem, 3vw, 2.4rem);
  margin: 0 0 16px;
}

.hero-text p {
  margin: 0 0 20px;
  color: var(--muted);
  max-width: 34rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-graphic {
  display: flex;
  justify-content: center;
}

.hero-logo {
  max-width: 260px;
  width: 100%;
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
}

/* ---------- Sections & Cards ---------- */

.section {
  background: linear-gradient(135deg, var(--card-bg), var(--bg-alt));
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-subtle);
}

.section h1,
.section h2 {
  margin-top: 0;
}

.section-note {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.9rem;
}

.cards-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.card {
  background: radial-gradient(circle at top left, var(--accent-soft), var(--card-bg));
  border-radius: var(--radius-lg);
  padding: 18px 18px 20px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
}

.card-note {
  font-size: 0.9rem;
  color: var(--muted);
}

.card-link {
  text-decoration: none;
  font-size: 0.9rem;
  color: var(--accent);
}

/* ---------- Lists ---------- */

.list {
  padding-left: 18px;
  margin: 8px 0 8px;
}

.list li {
  margin-bottom: 4px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 0.92rem;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast),
    transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--secondary));
  color: #ffffff;
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.36);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
}

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

.btn.ghost:hover {
  background: var(--accent-soft);
}

.btn.small {
  padding: 7px 14px;
  font-size: 0.85rem;
}

/* ---------- Forms ---------- */

.form {
  display: grid;
  gap: 14px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row label {
  font-size: 0.9rem;
  color: var(--muted);
}

.form-row input,
.form-row textarea {
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  padding: 9px 10px;
  background: var(--bg-alt);
  color: var(--text);
  font: inherit;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* ---------- Footer ---------- */

.site-footer {
  text-align: center;
  padding: 16px;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ---------- Utilities ---------- */

code {
  background: rgba(15, 23, 42, 0.6);
  padding: 2px 5px;
  border-radius: 4px;
  font-size: 0.86rem;
}

/* ---------- Responsive ---------- */

@media (max-width: 768px) {
  .site-header {
    flex-wrap: wrap;
    gap: 10px;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

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

  .hero-graphic {
    order: -1;
  }

  .page-content {
    padding-top: 84px;
  }
}