/* ==========================================================================
   Sabah Diabolo 沙巴扯铃协会 — Master CSS Design System
   ========================================================================== */

/* FontAwesome Icons Import */
@import url('../fonts/fontawesome/css/all.min.css');

:root {
  /* Color Palette (Dark Theme Obsidian + Electric Cyan) */
  --bg-dark: #07090e;
  --bg-surface-1: #0f172a;
  --bg-surface-2: #1e293b;
  --bg-surface-3: #334155;
  --bg-glass: rgba(15, 23, 42, 0.85);
  --bg-glass-card: rgba(30, 41, 59, 0.5);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-accent: rgba(6, 182, 212, 0.4);
  --border-glow: rgba(6, 182, 212, 0.6);

  /* Primary Brand Accent (Electric Cyan) */
  --primary: #06b6d4;
  --primary-hover: #0891b2;
  --primary-active: #0284c7;
  --primary-light: #22d3ee;
  --primary-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  --primary-glow: 0 0 20px rgba(6, 182, 212, 0.35);
  --primary-glow-lg: 0 0 35px rgba(6, 182, 212, 0.5);

  /* Warning State (Warm Amber / Gold - Incomplete / Pending) */
  --warning: #f59e0b;
  --warning-hover: #d97706;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --warning-border: rgba(245, 158, 11, 0.35);

  /* Danger State (Crimson - Destructive & Rule Drop ONLY) */
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --danger-border: rgba(239, 68, 68, 0.35);
  --danger-glow: 0 0 15px rgba(239, 68, 68, 0.3);

  /* Success State (Emerald - Confirmed / Active) */
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --success-border: rgba(16, 185, 129, 0.35);

  /* Text Colors */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #cbd5e1;

  /* Typography */
  --font-title: 'Outfit', -apple-system, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout Radius & Constraints */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --max-content-width: 600px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbars */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--bg-surface-3); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* App Shell Structure */
.app-wrapper {
  display: flex;
  min-height: 100vh;
  width: 100%;
}

/* Desktop Sidebar */
.app-sidebar {
  width: 240px;
  background: var(--bg-surface-1);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-header {
  padding: 20px 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo {
  width: 32px;
  height: 32px;
  background: var(--primary-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-weight: 800;
  font-family: var(--font-title);
  font-size: 18px;
  box-shadow: var(--primary-glow);
}

.brand-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 16px;
  color: var(--text-main);
  line-height: 1.2;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.nav-list {
  list-style: none;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav-item a:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
}

.nav-item.active a {
  color: var(--primary);
  background: var(--bg-surface-2);
  border: 1px solid var(--border-accent);
  box-shadow: var(--primary-glow);
}

.nav-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 8px 12px;
}

.sidebar-footer {
  margin-top: auto;
  padding: 16px;
  border-top: 1px solid var(--border-subtle);
}

/* Mobile Header */
.mobile-header {
  display: none;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 16px;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition-fast);
}

.icon-btn:hover { background: var(--bg-surface-2); }

/* Mobile Drawer Overlay */
.mobile-drawer-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 500;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
}
.mobile-drawer-overlay.open { opacity: 1; pointer-events: auto; }

.mobile-drawer {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 280px;
  background: var(--bg-surface-1);
  border-right: 1px solid var(--border-medium);
  z-index: 501;
  transform: translateX(-100%);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}
.mobile-drawer.open { transform: translateX(0); }

/* Context Strip */
.context-strip {
  background: rgba(6, 182, 212, 0.08);
  border-bottom: 1px solid var(--border-accent);
  padding: 8px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
}

.context-name {
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.context-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.context-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 12px;
}
.context-link:hover { color: var(--danger); }

/* Main Area */
.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.content-area {
  flex: 1;
  padding: 20px;
  width: 100%;
  margin: 0 auto;
}

/* Default centered max-width 600px for reading/forms */
.content-area.standard-width {
  max-width: var(--max-content-width);
}
/* Wide workspace exception for matrices/tables */
.content-area.wide-workspace {
  max-width: 100%;
}

/* UI Cards */
.card {
  background: var(--bg-surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 16px;
  transition: var(--transition-normal);
}

.card-glass {
  background: var(--bg-glass-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
}

.card-interactive:hover {
  border-color: var(--border-accent);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  transform: translateY(-2px);
}

.card-title {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
}

.badge-primary { background: rgba(6, 182, 212, 0.15); color: var(--primary-light); border: 1px solid var(--border-accent); }
.badge-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid var(--warning-border); }
.badge-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }
.badge-success { background: var(--success-bg); color: var(--success); border: 1px solid var(--success-border); }
.badge-neutral { background: var(--bg-surface-3); color: var(--text-sub); border: 1px solid var(--border-subtle); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
}

.btn-primary { background: var(--primary-gradient); color: #000; font-weight: 700; box-shadow: var(--primary-glow); }
.btn-primary:hover { filter: brightness(1.1); box-shadow: var(--primary-glow-lg); }

.btn-secondary { background: var(--bg-surface-2); color: var(--text-main); border: 1px solid var(--border-medium); }
.btn-secondary:hover { background: var(--bg-surface-3); border-color: var(--text-muted); }

.btn-danger { background: var(--danger); color: #fff; box-shadow: var(--danger-glow); }
.btn-danger:hover { background: var(--danger-hover); }

.btn-danger-outline { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }
.btn-danger-outline:hover { background: var(--danger); color: #fff; }

.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 12px; border-radius: var(--radius-sm); }

/* Form Controls */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; font-weight: 600; color: var(--text-sub); margin-bottom: 6px; }
.form-label .required-star { color: var(--danger); margin-left: 2px; }

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-surface-1);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  transition: var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

/* Keypad Grid for Scoring */
.keypad-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  margin-top: 6px;
}

.keypad-btn {
  background: var(--bg-surface-2);
  border: 1px solid var(--border-medium);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  padding: 10px 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.keypad-btn:hover { border-color: var(--primary); color: var(--primary); }
.keypad-btn.selected { background: var(--primary-gradient); color: #000; border-color: transparent; box-shadow: var(--primary-glow); }

/* Tables */
.table-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.data-table th {
  background: var(--bg-surface-2);
  color: var(--text-sub);
  font-weight: 600;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-medium);
}

.data-table td {
  padding: 12px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-main);
}

.data-table tr:hover td { background: rgba(255, 255, 255, 0.02); }
.rank-cell { font-family: var(--font-mono); font-weight: 700; color: var(--primary); }

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  margin-bottom: 16px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.alert-info { background: rgba(6, 182, 212, 0.1); border: 1px solid var(--border-accent); color: var(--text-sub); }
.alert-warning { background: var(--warning-bg); border: 1px solid var(--warning-border); color: var(--warning); }
.alert-danger { background: var(--danger-bg); border: 1px solid var(--danger-border); color: #fca5a5; }

/* Arithmetic Security Guard Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
}
.modal-overlay.active { opacity: 1; pointer-events: auto; }

.modal-card {
  background: var(--bg-surface-1);
  border: 1px solid var(--danger-border);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 440px;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.8), var(--danger-glow);
}

.modal-title {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
  color: var(--danger);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.puzzle-box {
  background: var(--bg-dark);
  border: 1px dashed var(--danger-border);
  padding: 12px;
  border-radius: var(--radius-md);
  margin: 16px 0;
  text-align: center;
}

.puzzle-question {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--warning);
  margin-bottom: 8px;
}

/* Responsive Media Queries */
@media (max-width: 768px) {
  .app-sidebar { display: none; }
  .mobile-header { display: flex; }
  .content-area.standard-width { max-width: 100%; }
}