/* ============================================
   微信公众号智能运营系统 - 全局样式
   设计风格: AI-Native UI + Minimalism (深色科技风)
   ============================================ */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=DM+Sans:wght@400;500;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ---- CSS Variables ---- */
:root {
  /* Colors */
  --color-primary: #6366F1;
  --color-secondary: #818CF8;
  --color-accent: #06B6D4;
  --color-bg: #0F172A;
  --color-card: #1E293B;
  --color-text: #F8FAFC;
  --color-text-secondary: #94A3B8;
  --color-border: #334155;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366F1 0%, #06B6D4 100%);
  --gradient-card-hover: linear-gradient(135deg, rgba(99,102,241,0.1) 0%, rgba(6,182,212,0.1) 100%);

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 20px rgba(99,102,241,0.4);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: 32px; }
h2 { font-size: 24px; }
h3 { font-size: 20px; }
h4 { font-size: 18px; }

p {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

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

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

code, pre {
  font-family: var(--font-mono);
}

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

.main-content {
  flex: 1;
  margin-left: 240px;
  padding: var(--space-lg);
  padding-top: 80px;
  max-width: 1200px;
}

/* ---- Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(51, 65, 85, 0.5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  z-index: 100;
}

.navbar-brand {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* ---- Sidebar ---- */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: 240px;
  height: 100vh;
  background: var(--color-card);
  border-right: 1px solid var(--color-border);
  padding: 80px var(--space-md) var(--space-md);
  z-index: 90;
  overflow-y: auto;
}

.sidebar-nav {
  list-style: none;
}

.sidebar-nav-item {
  margin-bottom: var(--space-xs);
}

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px var(--space-md);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-normal);
}

.sidebar-nav-link:hover,
.sidebar-nav-link.active {
  background: rgba(99, 102, 241, 0.1);
  color: var(--color-text);
}

.sidebar-nav-link.active {
  border-left: 3px solid var(--color-primary);
}

.sidebar-nav-icon {
  width: 20px;
  height: 20px;
  opacity: 0.7;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #FFFFFF;
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
}

.btn-danger {
  background: var(--color-error);
  color: #FFFFFF;
}

.btn-danger:hover {
  background: #DC2626;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ---- Cards ---- */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
}

.card-body {
  color: var(--color-text-secondary);
}

/* ---- Forms ---- */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  transition: all var(--transition-normal);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #64748B;
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
}

.form-error {
  margin-top: var(--space-xs);
  font-size: 13px;
  color: var(--color-error);
}

/* ---- Grid ---- */
.grid {
  display: grid;
  gap: var(--space-md);
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ---- Status Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
}

.badge-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}

.badge-info {
  background: rgba(99, 102, 241, 0.1);
  color: var(--color-primary);
}

/* ---- Loading ---- */
.loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ---- Animations ---- */
.fade-in {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.slide-up {
  animation: slideUp 0.4s ease;
}

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

/* ---- Toast / Alert ---- */
.toast {
  position: fixed;
  top: 80px;
  right: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: slideInRight 0.3s ease;
}

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

.toast-success { border-left: 4px solid var(--color-success); }
.toast-error { border-left: 4px solid var(--color-error); }
.toast-warning { border-left: 4px solid var(--color-warning); }

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
}

.modal-content {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 500px;
  width: 90%;
  animation: slideUp 0.3s ease;
}

/* ---- Divider ---- */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-md) 0;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .sidebar {
    width: 64px;
    padding: 80px 8px var(--space-md);
  }

  .sidebar-nav-link span {
    display: none;
  }

  .main-content {
    margin-left: 64px;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: 240px;
    padding: 80px var(--space-md) var(--space-md);
  }

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

  .main-content {
    margin-left: 0;
    padding: var(--space-md);
    padding-top: 80px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  h1 { font-size: 24px; }
  h2 { font-size: 20px; }
}

/* ---- Utility Classes ---- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }

.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-sm); }
.gap-2 { gap: var(--space-md); }

.hidden { display: none; }
.w-full { width: 100%; }