/* ========================================
   Football Analysis Platform - Unified Design System
   Modern Apple-style Glassmorphism UI
   ======================================== */

/* CSS Variables - Design Tokens */
:root {
  /* Primary Colors */
  --primary: #0071e3;
  --primary-hover: #0077ed;
  --primary-light: rgba(0, 113, 227, 0.1);

  /* Semantic Colors */
  --success: #34c759;
  --success-light: rgba(52, 199, 89, 0.1);
  --warning: #ff9f0a;
  --warning-light: rgba(255, 159, 10, 0.1);
  --danger: #ff3b30;
  --danger-light: rgba(255, 59, 48, 0.1);
  --info: #5ac8fa;
  --info-light: rgba(90, 200, 250, 0.1);

  /* Accent Colors */
  --purple: #af52de;
  --purple-light: rgba(175, 82, 222, 0.1);
  --teal: #64d2ff;
  --orange: #ff9500;

  /* Neutral Colors */
  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --text-tertiary: #aeaeb2;
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-tertiary: #e8e8ed;
  --border-color: rgba(0, 0, 0, 0.06);
  --border-color-strong: rgba(0, 0, 0, 0.1);

  /* Glass Effect */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-heavy: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);

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

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* Layout */
  --sidebar-width: 260px;
  --header-height: 64px;
  --content-max-width: 1200px;
}

/* Dark Theme */
[data-theme="dark"] {
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #6e6e73;
  --bg-primary: #1c1c1e;
  --bg-secondary: #2c2c2e;
  --bg-tertiary: #3a3a3c;
  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-strong: rgba(255, 255, 255, 0.15);
  --glass-bg: rgba(28, 28, 30, 0.85);
  --glass-bg-heavy: rgba(44, 44, 46, 0.95);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .sidebar {
  background: linear-gradient(180deg, #1c1c1e 0%, #2c2c2e 100%);
  border-right-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .main-header {
  background: rgba(28, 28, 30, 0.85);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .card {
  background: var(--bg-primary);
}

[data-theme="dark"] .stat-card {
  background: var(--bg-primary);
}

[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

[data-theme="dark"] .alert {
  background: var(--bg-tertiary);
}

/* Keyboard Shortcut Style */
kbd {
  display: inline-block;
  padding: 2px 8px;
  font-family: "SF Mono", "Menlo", monospace;
  font-size: 0.8em;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color-strong);
  border-radius: var(--radius-sm);
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
}

/* 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: -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* ========================================
   Layout Structure
   ======================================== */

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--glass-bg-heavy);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-right: 1px solid var(--border-color);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal);
}

.sidebar-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.sidebar-logo .icon {
  font-size: 1.5rem;
}

.sidebar-version {
  font-size: 0.7rem;
  padding: 2px 8px;
  background: var(--success);
  color: white;
  border-radius: var(--radius-full);
  font-weight: 600;
  margin-left: auto;
}

/* Navigation */
.sidebar-nav {
  flex: 1;
  padding: var(--space-md);
  overflow-y: auto;
}

.nav-section {
  margin-bottom: var(--space-lg);
}

.nav-section-title {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-xs);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 2px;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--primary);
  color: white;
}

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

.nav-item .badge {
  margin-left: auto;
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  background: var(--danger);
  color: white;
  font-weight: 600;
}

/* Sidebar Footer - Status */
.sidebar-footer {
  padding: var(--space-md);
  border-top: 1px solid var(--border-color);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

.status-dot.online {
  background: var(--success);
}
.status-dot.offline {
  background: var(--danger);
}
.status-dot.warning {
  background: var(--warning);
}

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

/* Header */
.main-header {
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

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

/* ========================================
   Components
   ======================================== */

/* Cards */
.card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-normal);
}

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

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

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.card-body {
  padding: var(--space-lg);
}

.card-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

/* Card Variants */
.card.card-success {
  border-left: 4px solid var(--success);
}
.card.card-warning {
  border-left: 4px solid var(--warning);
}
.card.card-danger {
  border-left: 4px solid var(--danger);
}
.card.card-info {
  border-left: 4px solid var(--info);
}
.card.card-primary {
  border-left: 4px solid var(--primary);
}
.card.card-purple {
  border-left: 4px solid var(--purple);
}

/* Module Cards (Collapsible) */
.module-card {
  margin-bottom: var(--space-lg);
}

.module-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition-fast);
}

.module-header:hover {
  background: var(--bg-secondary);
}

.module-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.module-icon.green {
  background: var(--success-light);
}
.module-icon.blue {
  background: var(--primary-light);
}
.module-icon.purple {
  background: var(--purple-light);
}
.module-icon.orange {
  background: var(--warning-light);
}
.module-icon.red {
  background: var(--danger-light);
}

.module-info {
  flex: 1;
}

.module-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.module-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.module-toggle {
  color: var(--text-tertiary);
  transition: transform var(--transition-fast);
}

.module-card.expanded .module-toggle {
  transform: rotate(180deg);
}

.module-content {
  display: none;
  border-top: 1px solid var(--border-color);
}

.module-card.expanded .module-content {
  display: block;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}

.btn-success {
  background: var(--success);
  color: white;
}

.btn-success:hover {
  filter: brightness(1.1);
  transform: scale(1.02);
}

.btn-warning {
  background: var(--warning);
  color: white;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--border-color-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.8rem;
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
}

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

/* Button Group */
.btn-group {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Form Elements */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-color-strong);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

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

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.form-checkbox input {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

/* Badges & Pills */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success {
  background: var(--success-light);
  color: var(--success);
}
.badge-warning {
  background: var(--warning-light);
  color: var(--warning);
}
.badge-danger {
  background: var(--danger-light);
  color: var(--danger);
}
.badge-info {
  background: var(--info-light);
  color: var(--info);
}
.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-md);
}

.stat-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.stat-value.success {
  color: var(--success);
}
.stat-value.danger {
  color: var(--danger);
}
.stat-value.warning {
  color: var(--warning);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

/* Progress Bar */
.progress {
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--info) 100%);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.progress-lg {
  height: 24px;
}

.progress-lg .progress-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
}

/* Tables */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table th {
  background: var(--bg-secondary);
  padding: var(--space-md);
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

table tr:last-child td {
  border-bottom: none;
}

table tr:hover td {
  background: var(--bg-secondary);
}

/* Match Item */
.match-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  transition: all var(--transition-fast);
}

.match-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.match-info {
  flex: 1;
}

.match-league {
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 600;
}

.match-time {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-left: var(--space-sm);
}

.match-teams {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.match-team {
  font-weight: 600;
  color: var(--text-primary);
}

.match-vs {
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

.match-score {
  padding: var(--space-xs) var(--space-md);
  background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
  color: white;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.match-handicap {
  font-size: 0.85rem;
  color: var(--success);
  margin-top: var(--space-xs);
}

.match-actions {
  display: flex;
  gap: var(--space-sm);
}

/* Content Area - Scrollable */
.content-area {
  flex: 1;
  padding: var(--space-xl);
  padding-bottom: var(--space-2xl);
  max-width: var(--content-max-width);
  width: 100%;
  margin: 0 auto;
  overflow-y: auto;
  height: calc(100vh - var(--header-height));
}

/* Log Drawer - Right Side (Hover to Open) */
.log-drawer {
  position: fixed;
  top: 0;
  right: -356px; /* 🆕 隐藏内容，只露出24px触发区域 */
  width: 380px;
  height: 100vh;
  background: #1a1a1a;
  z-index: 200;
  transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
}

/* 🆕 鼠标悬停时展开 */
.log-drawer:hover,
.log-drawer.open {
  right: 0;
}

/* 🆕 侧边触发条样式 - 简约指示器风格 */
.log-drawer-trigger {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 24px;
  background: linear-gradient(180deg, #1f2937 0%, #111827 100%);
  border-left: 3px solid #10b981;
  display: flex;
  align-items: center;
  justify-content: center;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  color: #10b981;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 1px;
}

.log-drawer-trigger:hover {
  background: linear-gradient(180deg, #10b981 0%, #059669 100%);
  color: white;
  border-left-color: #34d399;
}

/* 展开时隐藏触发条 */
.log-drawer:hover .log-drawer-trigger,
.log-drawer.open .log-drawer-trigger {
  opacity: 0;
  pointer-events: none;
}

.log-drawer-header {
  padding: var(--space-md) var(--space-lg);
  background: #252525;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #333;
  flex-shrink: 0;
}

.log-drawer-title {
  color: #10b981;
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.log-drawer-close {
  background: none;
  border: none;
  color: #888;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.log-drawer-close:hover {
  background: #333;
  color: #fff;
}

.log-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
  font-family: "SF Mono", "Menlo", "Monaco", "Courier New", monospace;
  font-size: 0.8rem;
  line-height: 1.7;
  color: #d4d4d4;
}

.log-drawer-footer {
  padding: var(--space-sm) var(--space-lg);
  background: #252525;
  border-top: 1px solid #333;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.log-entry {
  padding: 4px 8px;
  border-radius: 4px;
  margin-bottom: 4px;
  background: #222;
  word-break: break-word;
}

.log-entry.success {
  color: #4ec9b0;
  border-left: 3px solid #4ec9b0;
}
.log-entry.error {
  color: #f48771;
  border-left: 3px solid #f48771;
  background: rgba(244, 135, 113, 0.1);
}
.log-entry.warning {
  color: #dcdcaa;
  border-left: 3px solid #dcdcaa;
}
.log-entry.info {
  color: #9cdcfe;
  border-left: 3px solid #9cdcfe;
}

/* Log Toggle Button - 已禁用，改用hover触发条 */
.log-toggle-btn {
  display: none !important;
}

/* Backdrop - 已禁用 */
.log-backdrop {
  display: none !important;
}

/* Legacy log console (for other pages) */
.log-console {
  background: #1e1e1e;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.log-header {
  padding: var(--space-sm) var(--space-md);
  background: #2d2d2d;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.log-title {
  color: #10b981;
  font-size: 0.85rem;
  font-weight: 600;
}

.log-body {
  padding: var(--space-md);
  max-height: 300px;
  overflow-y: auto;
  font-family: "SF Mono", "Menlo", "Monaco", "Courier New", monospace;
  font-size: 0.8rem;
  line-height: 1.6;
  color: #d4d4d4;
}

@media (max-width: 768px) {
  .log-drawer {
    width: 100%;
    right: calc(-100% + 24px);
  }
  
  .log-drawer:hover,
  .log-drawer.open {
    right: 0;
  }

  .log-toggle-btn {
    display: none;
  }
}

/* Alerts */
.alert {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.9rem;
}

.alert-info {
  background: var(--info-light);
  color: #0c5460;
  border-left: 4px solid var(--info);
}

.alert-success {
  background: var(--success-light);
  color: #155724;
  border-left: 4px solid var(--success);
}

.alert-warning {
  background: var(--warning-light);
  color: #856404;
  border-left: 4px solid var(--warning);
}

.alert-danger {
  background: var(--danger-light);
  color: #721c24;
  border-left: 4px solid var(--danger);
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-tertiary);
  cursor: pointer;
}

.modal-body {
  padding: var(--space-lg);
  overflow-y: auto;
  max-height: 60vh;
}

.modal-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
}

/* Upload Area */
.upload-area {
  border: 2px dashed var(--border-color-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.upload-icon {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: var(--space-md);
}

.upload-text {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

/* Tab System */
.tabs {
  display: flex;
  gap: var(--space-xs);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--space-lg);
}

.tab-btn {
  padding: var(--space-sm) var(--space-lg);
  background: none;
  border: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--transition-fast);
}

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

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* Page sections - always visible, stacked vertically */
.page-section {
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--space-2xl);
  scroll-margin-top: 80px;
}

.page-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  padding: var(--space-md) 0;
  z-index: 10;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-secondary);
}

.empty-state .icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

/* Utilities */
.hidden {
  display: none !important;
}
.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}
.text-success {
  color: var(--success);
}
.text-danger {
  color: var(--danger);
}
.text-warning {
  color: var(--warning);
}
.text-muted {
  color: var(--text-tertiary);
}
.font-bold {
  font-weight: 600;
}
.mt-sm {
  margin-top: var(--space-sm);
}
.mt-md {
  margin-top: var(--space-md);
}
.mt-lg {
  margin-top: var(--space-lg);
}
.mb-sm {
  margin-bottom: var(--space-sm);
}
.mb-md {
  margin-bottom: var(--space-md);
}
.mb-lg {
  margin-bottom: var(--space-lg);
}
.flex {
  display: flex;
}
.flex-wrap {
  flex-wrap: wrap;
}
.items-center {
  align-items: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-sm {
  gap: var(--space-sm);
}
.gap-md {
  gap: var(--space-md);
}

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

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

.animate-pulse {
  animation: pulse 2s infinite;
}

/* Responsive */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

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

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

  .mobile-menu-btn {
    display: flex !important;
  }
}

@media (max-width: 768px) {
  :root {
    --space-lg: 16px;
    --space-xl: 24px;
  }

  .content-area {
    padding: var(--space-md);
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }
}

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

::-webkit-scrollbar-track {
  background: transparent;
}

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

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}