:root {
  --bg: #0b0b12;
  --bg-soft: #14142a;
  --bg-alt: #1c1c34;
  --text: #ececf3;
  --muted: #b7b7cb;
  --primary: #8b5cf6;
  --accent: #22d3ee;
  --success: #10b981;
  --danger: #ef4444;
  --card-radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --max-width: 1180px;
  --header-height: 74px;
  --transition: all 0.25s ease;
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --font-display: 'Inter', 'Sarabun', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-display);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

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

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

img {
  max-width: 100%;
  border-radius: var(--card-radius);
  display: block;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: 1rem;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin: 0 auto;
}

.section {
  padding: var(--spacing-xl) 0;
}

.section-title {
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: baseline;
  gap: var(--spacing-sm);
}

.section-title h2 {
  margin: 0;
  font-size: clamp(1.6rem, 2.2vw + 1rem, 2.8rem);
}

.section-title span {
  color: var(--muted);
  font-size: 0.95rem;
}

.text-muted {
  color: var(--muted);
}

.grid {
  display: grid;
  gap: var(--spacing);
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  background: rgba(139, 92, 246, 0.12);
  color: var(--primary);
  border-radius: 999px;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.card {
  background: linear-gradient(135deg, rgba(20, 20, 42, 0.96), rgba(11, 11, 18, 0.96));
  border-radius: var(--card-radius);
  box-shadow: var(--shadow);
  padding: var(--spacing);
  border: 1px solid rgba(139, 92, 246, 0.08);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing);
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.flex {
  display: flex;
  gap: var(--spacing);
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-wrap {
  flex-wrap: wrap;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.12);
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.chip {
  padding: 0.35rem 0.75rem;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
}

.progress {
  position: relative;
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.progress span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.table th,
.table td {
  padding: 0.75rem 1rem;
  text-align: left;
}

.table tbody tr {
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.table tbody tr:hover {
  background: rgba(139, 92, 246, 0.08);
}

input,
textarea,
select {
  width: 100%;
  padding: 0.75rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(20, 20, 42, 0.75);
  color: inherit;
  transition: var(--transition);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
}

label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.2rem;
}

.helper-text {
  font-size: 0.8rem;
  color: var(--muted);
}

.error-text {
  color: var(--danger);
  font-size: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.8rem;
  border-radius: 999px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #05050a;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover,
.btn:focus {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(139, 92, 246, 0.3);
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(139, 92, 246, 0.4);
  color: var(--text);
}

.btn-ghost:hover,
.btn-ghost:focus {
  background: rgba(139, 92, 246, 0.1);
  box-shadow: none;
}

header {
  backdrop-filter: blur(14px);
  background: rgba(11, 11, 18, 0.85);
  border-bottom: 1px solid rgba(139, 92, 246, 0.2);
  position: sticky;
  top: 0;
  z-index: 20;
}

.navbar {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  letter-spacing: 0.02em;
}

.nav-links a[aria-current="page"] {
  color: var(--accent);
}

.nav-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--spacing-xl) 0;
  background: rgba(10, 10, 18, 0.9);
  margin-top: var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-lg);
}

.footer-bottom {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing);
  justify-content: space-between;
  align-items: center;
}

.main-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
}

.hero {
  padding: calc(var(--spacing-xl) + 1.5rem) 0 var(--spacing-xl);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  align-items: center;
}

.hero h1 {
  font-size: clamp(2rem, 4vw + 1rem, 3.6rem);
  margin-bottom: var(--spacing);
}

.hero p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-visual {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual::after {
  content: '';
  position: absolute;
  inset: 20% 15% 0 15%;
  background: radial-gradient(circle at top, rgba(139, 92, 246, 0.4), transparent 60%);
  filter: blur(40px);
  z-index: -1;
}

.hero-feature {
  position: relative;
  max-width: 420px;
  width: 100%;
}

.hero-feature-body {
  margin-top: 1rem;
}

.hero-mascot {
  position: absolute;
  inset: auto -48px 20px auto;
  width: clamp(180px, 28vw, 260px);
  height: auto;
  filter: drop-shadow(0 25px 40px rgba(34, 211, 238, 0.35));
  animation: mascotFloat 6s ease-in-out infinite;
  pointer-events: none;
}

@keyframes mascotFloat {
  0% {
    transform: translateY(0) rotate(-4deg);
  }
  50% {
    transform: translateY(-16px) rotate(2deg);
  }
  100% {
    transform: translateY(0) rotate(-4deg);
  }
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing);
  margin-top: var(--spacing-lg);
}

.stat-card {
  padding: var(--spacing);
  border-radius: var(--card-radius);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

.stat-card strong {
  display: block;
  font-size: 1.8rem;
  margin-bottom: 0.4rem;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  header {
    position: sticky;
  }

  .hero {
    padding-top: calc(var(--spacing-xl) + var(--header-height));
  }

  .hero-visual {
    padding-top: 3rem;
  }

  .hero-mascot {
    inset: -90px auto auto 50%;
    transform: translateX(-50%);
  }

  .navbar {
    justify-content: space-between;
  }
}