/* ─── CSS Variables ─── */
:root {
  --color-bg: #1a1a1a;
  --color-bg-alt: #222222;
  --color-surface: #2a2a2a;
  --color-surface-hover: #333333;
  --color-border: #3a3a3a;
  --color-text: #e8e4e0;
  --color-text-muted: #9a9590;
  --color-text-dim: #6b6560;
  --color-accent: #5c6b4f;
  --color-accent-hover: #6d7e5d;
  --color-accent-light: rgba(92, 107, 79, 0.15);
  --color-error: #c45555;
  --color-error-bg: rgba(196, 85, 85, 0.1);
  --color-success: #5c8a5c;
  --color-success-bg: rgba(92, 138, 92, 0.1);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --transition: 0.2s ease;
  --max-width: 1100px;
}

/* ─── Reset ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--color-text);
}

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

/* ─── Container ─── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Navigation ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(26, 26, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

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

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

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-signin {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-signin:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  transform: translateY(-1px);
}

.btn-full {
  width: 100%;
}

.btn-google {
  background: #fff;
  color: #333;
  border: 1px solid #ddd;
  width: 100%;
  padding: 12px 20px;
  font-size: 0.9rem;
}

.btn-google:hover {
  background: #f8f8f8;
  color: #333;
  box-shadow: var(--shadow);
}

.google-icon {
  flex-shrink: 0;
}

/* ─── User Menu ─── */
.user-menu {
  position: relative;
}

.user-menu-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-family);
  color: var(--color-text);
  font-size: 0.875rem;
  transition: all var(--transition);
}

.user-menu-toggle:hover {
  background: var(--color-surface-hover);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

.user-avatar-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
}

.user-name {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chevron {
  transition: transform var(--transition);
}

.user-menu.open .chevron {
  transform: rotate(180deg);
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all var(--transition);
}

.user-menu.open .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-header {
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-name {
  font-weight: 600;
  font-size: 0.875rem;
}

.dropdown-email {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.dropdown-divider {
  height: 1px;
  background: var(--color-border);
}

.dropdown-item {
  display: block;
  padding: 10px 16px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: all var(--transition);
}

.dropdown-item:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

/* ─── Hero ─── */
.hero {
  position: relative;
  height: 70vh;
  min-height: 400px;
  max-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: url('/images/banner.jpg') center/cover no-repeat;
  margin-top: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(26, 26, 26, 0.4) 0%,
    rgba(26, 26, 26, 0.6) 50%,
    rgba(26, 26, 26, 0.9) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 24px;
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 12px;
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: rgba(255, 255, 255, 0.7);
  font-weight: 300;
  letter-spacing: 0.05em;
}

/* ─── Sections ─── */
.section {
  padding: 80px 0;
}

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

.section-title {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}

.about-content {
  max-width: 640px;
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ─── Cards ─── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.card-link:hover {
  color: inherit;
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.card-text {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ─── Auth Pages ─── */
.auth-page {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 24px 60px;
  min-height: 100vh;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.auth-subtitle {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 28px;
}

.auth-divider {
  display: flex;
  align-items: center;
  margin: 24px 0;
  color: var(--color-text-dim);
  font-size: 0.8rem;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.auth-divider span {
  padding: 0 12px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input {
  padding: 12px 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-size: 0.9rem;
  font-family: var(--font-family);
  transition: border-color var(--transition);
  outline: none;
}

.form-group input::placeholder {
  color: var(--color-text-dim);
}

.form-group input:focus {
  border-color: var(--color-accent);
}

.auth-links {
  margin-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

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

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

.auth-link-sep {
  margin: 0 8px;
  color: var(--color-text-dim);
}

/* ─── Alerts ─── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.alert-error {
  background: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid rgba(196, 85, 85, 0.2);
}

.alert-success {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid rgba(92, 138, 92, 0.2);
}

/* ─── Admin Page ─── */
.admin-page {
  padding: 100px 0 60px;
  min-height: 100vh;
}

.admin-header {
  margin-bottom: 40px;
}

.admin-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.admin-subtitle {
  color: var(--color-text-muted);
  font-size: 1rem;
}

.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.admin-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
}

.admin-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.admin-card-icon {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.admin-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.admin-card-text {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

.admin-card-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 10px;
  background: var(--color-accent-light);
  color: var(--color-accent-hover);
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.admin-card-badge-live {
  background: rgba(92, 138, 92, 0.15);
  color: var(--color-success);
}

.admin-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.admin-card-link:hover {
  color: inherit;
}

/* ─── Footer ─── */
.footer {
  margin-top: auto;
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-dim);
  font-size: 0.8rem;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .hero {
    height: 50vh;
    min-height: 320px;
  }

  .section {
    padding: 60px 0;
  }

  .auth-card {
    padding: 28px;
  }

  .user-name {
    display: none;
  }

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

@media (max-width: 480px) {
  .nav-inner {
    padding: 0 16px;
  }

  .container {
    padding: 0 16px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .auth-card {
    padding: 24px;
    border: none;
    background: transparent;
  }
}