/* === Colour palette aligned to ntan logo === */
:root {
  --primary: #163766;        /* ntan blue */
  --primary-dark: #0f2747;   /* darker blue */
  --accent: #f8b400;         /* ntan yellow */

  --bg: #111827;
  --bg-alt: #020617;
  --card: #020617;
  --text: #f9fafb;
  --muted: #9ca3af;
  --border: #1f2937;

  --radius-lg: 1.2rem;
  --radius-md: 0.8rem;
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.7);
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #3f3f3f 0, #020617 60%);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 60px;
}

/* === Header / Nav === */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px 20px;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.95), transparent);
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo img {
  height: 40px;
  display: block;
}

nav {
  display: flex;
  gap: 18px;
  font-size: 0.9rem;
  align-items: center;
  flex-wrap: wrap;
}

nav a {
  color: var(--muted);
  position: relative;
  padding-bottom: 4px;
}

nav a.active {
  color: var(--text);
}

nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(to right, var(--accent), var(--primary));
  transition: width 0.2s ease-out;
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

/* === Buttons === */
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  padding: 9px 18px;
  border-radius: 999px;
  border: none;
  font-size: 0.88rem;
  cursor: pointer;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 12px 30px rgba(22, 55, 102, 0.5);
  transition: transform 0.16s ease-out, box-shadow 0.16s ease-out;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 36px rgba(22, 55, 102, 0.6);
}

.btn-outline {
  border-radius: 999px;
  border: 1px solid var(--border);
  padding: 8px 14px;
  font-size: 0.85rem;
  background: rgba(15, 23, 42, 0.9);
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

/* === Sections / cards === */
main {
  margin-top: 10px;
}

.section {
  padding: 22px 18px;
  border-radius: var(--radius-lg);
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(31, 41, 55, 0.9);
  box-shadow: var(--shadow-soft);
  margin-bottom: 20px;
}

.section-header {
  margin-bottom: 16px;
}

.section-kicker {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.section-title {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.section-subtitle {
  font-size: 0.92rem;
  color: var(--muted);
  max-width: 34rem;
}

/* Cards grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  border-radius: var(--radius-md);
  border: 1px solid rgba(31, 41, 55, 0.9);
  padding: 14px 14px 16px;
  background: #020617;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(248, 180, 0, 0.2), transparent 60%);
  opacity: 0;
  transition: opacity 0.2s ease-out;
}

.card:hover::before {
  opacity: 1;
}

.card h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.card small {
  font-size: 0.78rem;
  color: var(--muted);
}

.card ul {
  list-style: none;
  margin-top: 8px;
  font-size: 0.86rem;
  color: var(--muted);
}

.card ul li {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin-bottom: 4px;
}

.card ul li span.bullet {
  margin-top: 5px;
  font-size: 0.6rem;
}

/* === Hero (Home) === */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 26px;
  align-items: center;
  padding: 26px 18px 30px;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, #1f2937 0, #020617 60%);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(31, 41, 55, 0.9);
  margin-bottom: 20px;
}

.hero-kicker {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.hero h1 {
  font-size: 2.2rem;
  line-height: 1.15;
  margin-bottom: 12px;
}

.hero h1 .highlight {
  color: var(--accent);
}

.hero-subtitle {
  color: var(--muted);
  font-size: 0.98rem;
  max-width: 26rem;
  margin-bottom: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--muted);
}

.hero-tag {
  border-radius: 999px;
  border: 1px solid var(--border);
  padding: 6px 10px;
  background: rgba(15, 23, 42, 0.95);
}

/* === Two-column layout === */
.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 18px;
}

/* === Forms === */
form {
  display: grid;
  gap: 10px;
  font-size: 0.85rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

input,
textarea,
select {
  border-radius: 0.65rem;
  border: 1px solid rgba(55, 65, 81, 0.9);
  padding: 8px 10px;
  background: rgba(15, 23, 42, 0.9);
  color: var(--text);
  font: inherit;
  resize: vertical;
}

textarea {
  min-height: 90px;
}

/* === Footer === */
footer {
  margin-top: 24px;
  padding: 16px;
  font-size: 0.78rem;
  color: var(--muted);
  text-align: center;
}

footer .brand {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.7rem;
}

/* === Admin sub-nav === */
.admin-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.85rem;
}

.admin-nav a {
  border-radius: 999px;
  border: 1px solid var(--border);
  padding: 6px 10px;
  color: var(--muted);
}

.admin-nav a.active {
  border-color: var(--accent);
  color: var(--text);
}

/* === Responsive === */
@media (max-width: 900px) {
  .hero,
  .two-col,
  .cards-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  header {
    position: static;
  }
}

@media (max-width: 640px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  nav {
    gap: 12px;
  }

  .page {
    padding-inline: 12px;
  }

  .section,
  .hero {
    padding-inline: 14px;
  }
}