/* ===== BigSeed App CSS v3.1 - Fresh Nature Theme ===== */
/* Lighter green theme with soft natural tones */

/* === Variables === */
:root {
  --bg-primary: #f0f5ed;
  --bg-secondary: #e8f0e0;
  --bg-tertiary: #dce8d0;
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-input: rgba(240, 248, 235, 0.9);
  --bg-sidebar: rgba(255, 255, 255, 0.95);
  --text-primary: #2a3a22;
  --text-secondary: rgba(42, 58, 34, 0.6);
  --text-muted: #809070;
  --text-muted-light: rgba(128, 144, 112, 0.5);
  --accent: #5a8a4a;
  --accent-light: #7ab064;
  --accent-dark: #3d6b2e;
  --accent-glow: rgba(90, 138, 74, 0.15);
  --danger: #e06060;
  --danger-dark: #c04040;
  --success: #50b060;
  --success-dark: #3a9048;
  --warning: #d4a050;
  --info: #5090d4;

  --border: rgba(90, 138, 74, 0.12);
  --border-light: rgba(90, 138, 74, 0.06);
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
  --shadow-accent: 0 4px 15px rgba(90, 138, 74, 0.2);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --sidebar-width: 240px;
  --header-height: 60px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

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

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

body {
  font-family: var(--font);
  background: var(--bg-primary);
  background-image:
    radial-gradient(ellipse at 50% 0%, rgba(90, 138, 74, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(60, 100, 50, 0.02) 0%, transparent 50%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

/* === Scrollbar === */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-dark);
}

/* === Selection === */
::selection {
  background: var(--accent);
  color: #fff;
}

/* === Layout === */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* === Sidebar === */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 0;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 100;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.sidebar-logo {
  padding: 28px 20px 24px;
  border-bottom: 1px solid var(--border-light);
  text-align: center;
  position: relative;
}

.sidebar-logo::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.25;
}

.sidebar-logo h2 {
  color: var(--accent-dark);
  font-size: 1.35rem;
  font-weight: 800;
}

.sidebar-logo small {
  color: var(--text-muted);
  font-size: 0.8rem;
  display: block;
  margin-top: 2px;
}

.sidebar-nav {
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  transition: var(--transition);
}

.sidebar-nav a:hover {
  background: var(--accent-glow);
  color: var(--accent-dark);
}

.nav-icon {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
}

/* === Main Content === */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* === Top Header === */
.top-header {
  height: var(--header-height);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* === User Dropdown === */
.user-dropdown {
  position: relative;
}

.user-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
}

.user-dropdown-btn:hover {
  background: var(--accent-glow);
}

.user-avatar {
  width: 30px;
  height: 30px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
}

.dropdown-arrow {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.user-dropdown-menu {
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-width: 180px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: var(--transition);
  z-index: 200;
}

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

.user-dropdown-menu a {
  display: block;
  padding: 10px 16px;
  color: var(--text-primary);
  font-size: 0.88rem;
}

.user-dropdown-menu a:hover {
  background: var(--accent-glow);
}

.dropdown-logout {
  border-top: 1px solid var(--border-light);
  color: var(--danger) !important;
}

/* === Page Content === */
.page-content {
  padding: 24px;
  flex: 1;
}

/* === Cards === */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* === Stats Grid === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-dark);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent-dark);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.82rem;
}

.btn-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* === Forms === */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 600;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition);
  font-family: var(--font);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input::placeholder {
  color: var(--text-muted-light);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* === Toast === */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease-out, toastOut 0.3s ease-in 2.7s forwards;
  max-width: 360px;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--info); }
.toast-warning { background: var(--warning); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(20px); }
}

/* === Loading === */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.spinner-lg {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 12px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* === Utilities === */
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }

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

.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }

/* === Mobile Menu === */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text-primary);
  backdrop-filter: blur(10px);
}

/* === Page Title === */
.page-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.page-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

/* === Empty State === */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

/* === Responsive === */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .mobile-menu-btn {
    display: block;
  }

  .page-content {
    padding: 16px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== Membership Page ===== */
.section-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 28px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.plan-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.plan-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.2s;
  position: relative;
}

.plan-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.plan-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.plan-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.plan-price {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-light);
  margin-bottom: 4px;
}

.plan-price small {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-muted);
}

.plan-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  flex: 1;
}

.plan-features li {
  padding: 5px 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.btn-block {
  width: 100%;
}

.subscribe-btn {
  margin-top: auto;
}