/* ============================================
   DMS — Decision Model Simulator
   Stylesheet — Arabic RTL
   ============================================ */

:root {
  --bg-main: #0f172a;
  --bg-surface: #1e293b;
  --bg-card: #1e293b;
  --bg-elevated: #334155;
  --bg-input: #0f172a;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-dark: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --purple: #a855f7;
  --cyan: #06b6d4;
  --orange: #f97316;
  --pink: #ec4899;
  --indigo: #6366f1;
  --teal: #14b8a6;
  --rose: #f43f5e;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.4);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --max-w: 1200px;
  --font: 'Tajawal', sans-serif;
  --font-display: 'Cairo', sans-serif;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: var(--font);
  background: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x:hidden;
}
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #1e293b 0%, #312e81 40%, #1e1b4b 100%);
}
.hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(59,130,246,0.15) 0%, transparent 50%),
              radial-gradient(circle at 80% 30%, rgba(168,85,247,0.12) 0%, transparent 50%),
              radial-gradient(circle at 50% 80%, rgba(6,182,212,0.1) 0%, transparent 50%);
}
.hero-content {
  position: relative; z-index: 2;
  padding: 40px 20px 60px;
}
.hero-logo { width: 70px; height: auto; opacity: 0.85; margin-bottom: 16px; }
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 900;
  background: linear-gradient(135deg, #60a5fa, #a855f7, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}
.hero-subtitle {
  font-size: clamp(0.95rem, 2.5vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 20px;
}
.hero-stats {
  display: flex; gap: 16px; justify-content: center;
  font-size: 0.9rem; color: var(--text-muted);
}
.hero-stats strong { color: var(--text-primary); font-weight: 700; }
.stat-divider { opacity: 0.4; }
.hero-wave {
  position: absolute; bottom: -1px; left: 0; right: 0;
  line-height: 0;
}
.hero-wave svg { width: 100%; height: 80px; display:block; }

/* ============ PROGRESS BAR ============ */
.progress-bar-wrap {
  background: var(--bg-surface);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding: 16px 0;
  position: sticky; top: 0; z-index: 50;
}
.progress-info {
  display: flex; justify-content: space-between;
  margin-bottom: 8px; font-size: 0.85rem; color: var(--text-muted);
}
.progress-track {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 3px; overflow: hidden;
}
.progress-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--purple), var(--cyan));
  border-radius: 3px;
  transition: width 0.5s cubic-bezier(0.4,0,0.2,1);
}

/* ============ MODELS GRID ============ */
.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  padding: 40px 0 60px;
}
.model-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 28px 24px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.model-card::before {
  content: '';
  position: absolute; top: 0; right: 0;
  width: 100%; height: 3px;
  background: var(--card-color, var(--accent));
  opacity: 0.8;
}
.model-card:hover {
  transform: translateY(-4px);
  border-color: var(--card-color, var(--accent));
  box-shadow: var(--shadow-lg);
}
.model-card.completed::after {
  content: '✓';
  position: absolute; top: 16px; left: 16px;
  width: 28px; height: 28px;
  background: var(--success);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: #fff; font-weight: bold;
}
.model-number {
  font-family: var(--font-display);
  font-size: 0.8rem; font-weight: 700;
  color: var(--card-color, var(--accent));
  margin-bottom: 12px;
}
.model-icon { font-size: 2rem; margin-bottom: 12px; display:block; }
.model-name {
  font-family: var(--font-display);
  font-size: 1.1rem; font-weight: 700;
  margin-bottom: 8px; color: var(--text-primary);
}
.model-desc {
  font-size: 0.88rem; color: var(--text-muted);
  line-height: 1.6;
}
.model-tag {
  display: inline-block;
  margin-top: 14px; padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  background: rgba(59,130,246,0.1);
  color: var(--card-color, var(--accent-light));
  border: 1px solid rgba(59,130,246,0.2);
}

/* ============ MODAL ============ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center; justify-content: center;
  z-index: 100; padding: 20px;
}
.modal-overlay.active { display: flex; animation: fadeIn 0.3s ease; }
.modal {
  background: var(--bg-surface);
  border-radius: var(--radius);
  width: 100%; max-width: 800px;
  max-height: 90vh; overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.4s cubic-bezier(0.4,0,0.2,1);
}
.modal-close {
  position: absolute; top: 16px; left: 16px;
  width: 36px; height: 36px;
  border-radius: 50%; border: none;
  background: var(--bg-elevated); color: var(--text-primary);
  cursor: pointer; font-size: 1rem;
  z-index: 10; transition: var(--transition);
}
.modal-close:hover { background: var(--danger); }
.modal-body { padding: 32px; }

/* Modal sections */
.sim-header { margin-bottom: 24px; }
.sim-number { font-size: 0.8rem; color: var(--accent-light); font-weight: 700; }
.sim-title {
  font-family: var(--font-display); font-size: 1.5rem; font-weight: 800;
  margin: 8px 0 6px;
}
.sim-intro {
  font-size: 0.95rem; color: var(--text-secondary);
  line-height: 1.8;
}
.sim-divider {
  height: 1px; background: rgba(255,255,255,0.06);
  margin: 24px 0;
}
.sim-section-title {
  font-family: var(--font-display);
  font-size: 1.05rem; font-weight: 700;
  margin-bottom: 14px; color: var(--text-primary);
}
.sim-hint {
  font-size: 0.85rem; color: var(--text-muted);
  margin-bottom: 16px;
}

/* ============ INTERACTIVE ELEMENTS ============ */
/* Buttons */
.btn {
  padding: 12px 28px; border: none; border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 0.95rem; font-weight: 700;
  cursor: pointer; transition: var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  color: #fff;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(59,130,246,0.3); }
.btn-secondary {
  background: var(--bg-elevated); color: var(--text-primary);
}
.btn-secondary:hover { background: var(--bg-input); border: 1px solid var(--accent); }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }

/* Option cards (clickable choices) */
.option-card {
  background: var(--bg-input);
  border: 2px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  cursor: pointer; transition: var(--transition);
  margin-bottom: 12px;
}
.option-card:hover {
  border-color: var(--accent-light);
  transform: translateX(-4px);
}
.option-card.selected {
  border-color: var(--accent);
  background: rgba(59,130,246,0.08);
}
.option-card.correct {
  border-color: var(--success);
  background: rgba(34,197,94,0.1);
}
.option-card.wrong {
  border-color: var(--danger);
  background: rgba(239,68,68,0.08);
}
.option-card .opt-label { font-weight: 700; margin-bottom: 4px; }
.option-card .opt-desc { font-size: 0.85rem; color: var(--text-muted); }

/* Feedback box */
.feedback-box {
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-top: 20px;
  display: none;
  animation: slideUp 0.3s ease;
}
.feedback-box.show { display: block; }
.feedback-box.success {
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.3);
}
.feedback-box.error {
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.2);
}
.feedback-box.info {
  background: rgba(59,130,246,0.08);
  border: 1px solid rgba(59,130,246,0.2);
}
.feedback-title { font-weight: 700; margin-bottom: 8px; }
.feedback-text { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

/* Sliders */
.slider-group { margin-bottom: 20px; }
.slider-label {
  display: flex; justify-content: space-between;
  font-size: 0.9rem; margin-bottom: 8px;
}
.slider-label .val {
  font-weight: 700; color: var(--accent-light);
  font-family: var(--font-display);
}
input[type="range"] {
  width: 100%; height: 6px;
  background: rgba(255,255,255,0.1);
  border-radius: 3px; outline: none;
  -webkit-appearance: none; appearance: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--accent); cursor: pointer;
  border: 3px solid #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--accent); cursor: pointer; border: 3px solid #fff;
}

/* Matrix / Grid layouts */
.matrix-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px; margin: 16px 0;
}
.matrix-cell {
  border-radius: var(--radius-sm);
  padding: 20px; min-height: 100px;
  border: 2px solid transparent;
  cursor: pointer; transition: var(--transition);
  display: flex; flex-direction: column;
}
.matrix-cell:hover { transform: scale(1.02); }
.matrix-cell .cell-title { font-weight: 700; margin-bottom: 6px; font-size: 0.95rem; }
.matrix-cell .cell-hint { font-size: 0.8rem; opacity: 0.7; }
.matrix-cell.drop-target { border-style: dashed; }

/* Quadrant colors */
.q-1 { background: rgba(239,68,68,0.15); border-color: rgba(239,68,68,0.3); }
.q-1.selected { background: rgba(239,68,68,0.3); border-color: var(--danger); }
.q-2 { background: rgba(34,197,94,0.12); border-color: rgba(34,197,94,0.3); }
.q-2.selected { background: rgba(34,197,94,0.25); border-color: var(--success); }
.q-3 { background: rgba(245,158,11,0.12); border-color: rgba(245,158,11,0.3); }
.q-3.selected { background: rgba(245,158,11,0.25); border-color: var(--warning); }
.q-4 { background: rgba(100,116,139,0.15); border-color: rgba(100,116,139,0.3); }
.q-4.selected { background: rgba(100,116,139,0.25); border-color: var(--text-muted); }

/* SWOT */
.swot-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px; margin: 16px 0;
}
.swot-cell {
  border-radius: var(--radius-sm);
  padding: 20px; min-height: 120px;
  background: var(--bg-input);
  border: 2px solid transparent;
}
.swot-cell textarea {
  width: 100%; background: transparent; border: none;
  color: var(--text-primary); font-family: var(--font);
  font-size: 0.88rem; resize: vertical; min-height: 60px;
}
.swot-cell textarea::placeholder { color: var(--text-muted); }
.swot-cell textarea:focus { outline: none; }
.swot-cell.s { border-color: var(--success); }
.swot-cell.w { border-color: var(--danger); }
.swot-cell.o { border-color: var(--accent); }
.swot-cell.t { border-color: var(--warning); }

/* Result cards */
.result-card {
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: 20px; margin: 12px 0;
  border-right: 4px solid var(--accent);
}
.result-card .result-label { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 4px; }
.result-card .result-value {
  font-family: var(--font-display); font-size: 1.4rem; font-weight: 700;
  color: var(--text-primary);
}
.result-card .result-detail { font-size: 0.85rem; color: var(--text-muted); margin-top: 6px; }

/* Scenario cards */
.scenario-row {
  display: flex; gap: 12px; margin: 16px 0; flex-wrap: wrap;
}
.scenario-card {
  flex: 1; min-width: 180px;
  background: var(--bg-input);
  border: 2px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm); padding: 16px;
  cursor: pointer; transition: var(--transition);
}
.scenario-card:hover { border-color: var(--accent-light); }
.scenario-card.selected { border-color: var(--accent); background: rgba(59,130,246,0.08); }

/* Game theory payoff matrix */
.payoff-table {
  width: 100%; border-collapse: collapse; margin: 16px 0;
}
.payoff-table th, .payoff-table td {
  border: 1px solid rgba(255,255,255,0.1);
  padding: 14px; text-align: center; font-size: 0.9rem;
}
.payoff-table th { background: var(--bg-elevated); font-weight: 700; }
.payoff-table td { background: var(--bg-input); cursor: pointer; transition: var(--transition); }
.payoff-table td:hover { background: var(--bg-elevated); }
.payoff-table td.best { background: rgba(34,197,94,0.15); border: 2px solid var(--success); }
.payoff-table td.worst { background: rgba(239,68,68,0.1); }

/* Tree visualization */
.tree-node {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-input);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px; padding: 10px 16px;
  margin: 8px auto; max-width: 260px;
  font-size: 0.9rem; transition: var(--transition);
}
.tree-node:hover { border-color: var(--accent-light); }
.tree-node.decision { border-right: 4px solid var(--accent); }
.tree-node.chance { border-right: 4px solid var(--purple); }
.tree-node.outcome-good { border-right: 4px solid var(--success); }
.tree-node.outcome-bad { border-right: 4px solid var(--danger); }

/* Takeaway box */
.takeaway-box {
  background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(168,85,247,0.08));
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: var(--radius-sm);
  padding: 20px; margin-top: 24px;
}
.takeaway-label {
  font-size: 0.8rem; color: var(--accent-light);
  font-weight: 700; margin-bottom: 8px;
}
.takeaway-text { font-size: 0.95rem; color: var(--text-primary); line-height: 1.8; }

/* Complete button */
.sim-complete-wrap { margin-top: 28px; text-align: center; }

/* Counter / badge */
.badge {
  display: inline-block; padding: 2px 10px;
  border-radius: 12px; font-size: 0.75rem; font-weight: 700;
}
.badge-blue { background: rgba(59,130,246,0.15); color: var(--accent-light); }
.badge-green { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-orange { background: rgba(249,115,22,0.15); color: var(--orange); }

/* Bar chart (simple CSS bars) */
.bar-chart { margin: 16px 0; }
.bar-row {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 10px;
}
.bar-label { width: 120px; font-size: 0.85rem; color: var(--text-secondary); text-align: left; }
.bar-track { flex: 1; height: 24px; background: rgba(255,255,255,0.05); border-radius: 4px; overflow: hidden; }
.bar-fill {
  height: 100%; border-radius: 4px;
  transition: width 0.6s cubic-bezier(0.4,0,0.2,1);
  display: flex; align-items: center; justify-content: flex-start;
  padding-right: 8px; font-size: 0.8rem; color: #fff; font-weight: 600;
}

/* ============ ANIMATIONS ============ */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }

/* Explanation box (pre-simulator) */
.explanation-box {
  background: var(--bg-input);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-sm);
  padding: 24px;
  margin: 20px 0;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 40px 0; text-align: center;
}
.footer-logo { width: 50px; opacity: 0.6; margin-bottom: 12px; }
.footer p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 4px; }
.footer-sub { font-size: 0.8rem; color: var(--text-muted); opacity: 0.6; }

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .models-grid { grid-template-columns: 1fr; }
  .matrix-grid, .swot-grid { grid-template-columns: 1fr; }
  .modal-body { padding: 20px; }
  .hero { min-height: 260px; }
  .scenario-row { flex-direction: column; }
}
@media (max-width: 480px) {
  .container { padding: 0 14px; }
  .model-card { padding: 20px 16px; }
  .payoff-table th, .payoff-table td { padding: 8px; font-size: 0.8rem; }
}