:root {
  --bg: #0b1220;
  --bg-soft: #101a30;
  --panel: #111a2e;
  --panel-soft: #16223b;
  --text: #eaf1ff;
  --muted: #9db0d1;
  --blue: #2563eb;
  --blue-soft: #3b82f6;
  --yellow: #facc15;
  --yellow-soft: #fde68a;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 22px;
  --success-bg: rgba(34, 197, 94, 0.12);
  --success-border: rgba(34, 197, 94, 0.25);
  --success-text: #86efac;
  --error-bg: rgba(239, 68, 68, 0.12);
  --error-border: rgba(239, 68, 68, 0.25);
  --error-text: #fca5a5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.25), transparent 25%),
    linear-gradient(180deg, #08101d 0%, #0b1220 100%);
  color: var(--text);
}

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

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 48px;
  border-bottom: 1px solid var(--border);
  background: rgba(8, 16, 29, 0.75);
  backdrop-filter: blur(10px);
}

.brand {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-main {
  color: #ffffff;
}

.brand-accent {
  color: var(--yellow);
}

.nav-links {
  display: flex;
  gap: 22px;
  align-items: center;
}

.nav-links a {
  color: var(--muted);
  font-weight: 600;
}

.nav-links a:hover {
  color: #ffffff;
}

.hero-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 70px 28px 40px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: center;
}

.tag {
  display: inline-block;
  background: rgba(250, 204, 21, 0.12);
  color: var(--yellow-soft);
  border: 1px solid rgba(250, 204, 21, 0.2);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 18px;
}

.hero-left h1 {
  font-size: 56px;
  line-height: 1.05;
  margin: 0 0 16px;
  max-width: 700px;
}

.hero-left p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
  max-width: 680px;
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 13px 20px;
  border-radius: 14px;
  font-weight: 800;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-soft) 100%);
  color: white;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: white;
  border: 1px solid var(--border);
}

.hero-right {
  display: grid;
  gap: 18px;
}

.card,
.feature-card,
.admin-card,
.auth-card {
  background: linear-gradient(180deg, rgba(17, 26, 46, 0.95) 0%, rgba(22, 34, 59, 0.95) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.stat-card {
  padding: 24px;
}

.stat-card .label {
  color: var(--muted);
  margin-bottom: 10px;
}

.stat-card h2 {
  margin: 0;
  font-size: 34px;
}

.highlight {
  border-color: rgba(250, 204, 21, 0.25);
}

.features {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 28px 70px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card {
  padding: 24px;
}

.feature-card h3 {
  margin-top: 0;
  margin-bottom: 10px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.auth-page {
  min-height: calc(100vh - 90px);
  display: grid;
  place-items: center;
  padding: 40px 20px;
}

.auth-card {
  width: 100%;
  max-width: 520px;
  padding: 34px;
}

.auth-card h1 {
  margin: 0 0 10px 0;
  font-size: 38px;
}

.auth-subtext {
  margin: 0 0 24px 0;
  color: var(--muted);
  line-height: 1.8;
}

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

.auth-form label {
  margin-top: 10px;
  font-weight: 700;
  color: #ffffff;
}

.auth-form input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: #ffffff;
  outline: none;
  font-size: 15px;
}

.auth-form input::placeholder {
  color: #89a0c7;
}

.auth-form input:focus {
  border-color: rgba(59, 130, 246, 0.55);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.auth-btn {
  margin-top: 18px;
  width: 100%;
}

.auth-footer {
  margin: 20px 0 0 0;
  color: var(--muted);
}

.auth-footer a {
  color: var(--yellow);
  font-weight: 700;
}

.flash {
  margin: 16px 0;
  padding: 14px 16px;
  border-radius: 14px;
  font-weight: 700;
}

.flash.success {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success-text);
}

.flash.error {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
}

.admin-body {
  min-height: 100vh;
}

.admin-wrapper {
  max-width: 1100px;
  margin: 0 auto;
  padding: 54px 28px 70px;
}

.admin-panel {
  background: linear-gradient(180deg, rgba(17, 26, 46, 0.94) 0%, rgba(22, 34, 59, 0.96) 100%);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 34px;
  box-shadow: var(--shadow);
}

.admin-panel h1 {
  margin-top: 0;
  font-size: 40px;
}

.admin-panel p {
  color: var(--muted);
  line-height: 1.8;
}

.admin-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.admin-card {
  padding: 22px;
}

.admin-card h3 {
  margin-top: 0;
  margin-bottom: 10px;
}

.mono {
  font-family: "Courier New", monospace;
  color: var(--yellow-soft);
  word-break: break-word;
}

.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.modal-content {
  width: 100%;
  max-width: 640px;
  background: #0f182b;
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.modal-content h2 {
  margin-top: 0;
}

.modal-note {
  color: var(--muted);
}

@media (max-width: 960px) {
  .hero-wrapper,
  .features,
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .hero-left h1 {
    font-size: 42px;
  }

  .navbar {
    padding: 18px 20px;
    flex-direction: column;
    gap: 14px;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .auth-card {
    padding: 24px;
  }

  .auth-card h1 {
    font-size: 30px;
  }

  .admin-panel h1 {
    font-size: 30px;
  }
}