/* ==============================================
   🎨 MONTE-CARLO.CSS — DRIVE ADAPTED
   ✅ Light mode par défaut (Drive convention)
   ✅ Dark mode via body.avd-page:not(.light-mode)
   ✅ Toutes les classes conservées
   ============================================== */

/* ============================================
   🌟 VARIABLES
   ============================================ */
   :root {
    --ml-primary:   #667eea;
    --ml-secondary: #764ba2;
    --ml-accent:    #f093fb;
    --ml-success:   #10b981;
    --ml-danger:    #ef4444;
    --ml-warning:   #f59e0b;

    --text-primary:   #1e293b;
    --text-secondary: #475569;
    --text-tertiary:  #64748b;

    --border-light: rgba(203, 213, 225, 0.5);
    --shadow-sm:    0 4px 16px rgba(0, 0, 0, 0.07);
    --shadow-md:    0 8px 24px rgba(0, 0, 0, 0.10);

    --radius-sm:  10px;
    --radius-md:  14px;
    --radius-lg:  20px;
    --radius-xl:  24px;

    --transition-smooth: all 0.25s ease;
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Dark mode variables (Drive convention) */
body.avd-page:not(.light-mode) {
    --text-primary:   #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary:  #94a3b8;
    --border-light:   rgba(148, 163, 184, 0.12);
    --shadow-sm:      0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-md:      0 8px 24px rgba(0, 0, 0, 0.4);
}

/* ============================================
   ✅ BREADCRUMB TITLE (Drive header)
   ============================================ */
.mc-breadcrumb-title {
    font-size: 13px;
    font-weight: 800;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

/* ============================================
   ✅ SECTION TITLE
   ============================================ */
.section-title {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 20px 0;
    flex-wrap: wrap;
}

.section-title i {
    color: var(--ml-primary);
    font-size: 1.3rem;
    flex-shrink: 0;
}

/* ============================================
   ✅ PANEL TITLE
   ============================================ */
.panel-title {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 24px 0;
    flex-wrap: wrap;
}

.panel-title i {
    color: var(--ml-primary);
    font-size: 1.3rem;
    flex-shrink: 0;
}

/* ============================================
   ✅ SUBSECTION TITLE
   ============================================ */
.subsection-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 24px 0 12px 0;
    flex-wrap: wrap;
}

.subsection-title:first-of-type { margin-top: 0; }
.subsection-title i { color: var(--ml-secondary); font-size: 1rem; }

/* ============================================
   ✅ ADVANCED SECTION TITLE
   ============================================ */
.advanced-section-title {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 14px 0;
    flex-wrap: wrap;
}

.advanced-section-title i { color: var(--ml-secondary); font-size: 0.95rem; }

/* ============================================
   🚀 QUICK TEMPLATES
   ============================================ */
.quick-templates {
    background: white;
    border-radius: var(--radius-xl);
    padding: 24px 28px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

body.avd-page:not(.light-mode) .quick-templates {
    background: rgba(30, 41, 59, 0.92);
    border-color: rgba(255, 255, 255, 0.08);
}

/* ============================================
   🗃 TEMPLATES GRID
   ============================================ */
.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.template-btn {
    background: #f8fafc;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 18px 12px;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    text-align: center;
    position: relative;
    overflow: hidden;
    font-family: inherit;
}

.template-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--ml-primary);
    background: white;
}

.template-btn i {
    font-size: 1.8rem;
    margin-bottom: 2px;
    transition: transform 0.25s ease;
}

.template-btn:hover i { transform: scale(1.12); }

.template-conservative { border-left: 4px solid var(--ml-success); }
.template-conservative i { color: var(--ml-success); }
.template-balanced { border-left: 4px solid var(--ml-primary); }
.template-balanced i { color: var(--ml-primary); }
.template-aggressive { border-left: 4px solid var(--ml-danger); }
.template-aggressive i { color: var(--ml-danger); }
.template-retirement { border-left: 4px solid var(--ml-secondary); }
.template-retirement i { color: var(--ml-secondary); }
.template-crypto { border-left: 4px solid var(--ml-warning); }
.template-crypto i { color: var(--ml-warning); }

.template-name {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--text-primary);
}

.template-desc {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-weight: 600;
    line-height: 1.3;
}

body.avd-page:not(.light-mode) .template-btn {
    background: rgba(15, 23, 42, 0.6);
    border-color: rgba(148, 163, 184, 0.12);
}

body.avd-page:not(.light-mode) .template-btn:hover {
    background: rgba(15, 23, 42, 0.9);
}

/* ============================================
   💾 SCENARIO MANAGER
   ============================================ */
.scenario-manager {
    background: white;
    border-radius: var(--radius-xl);
    padding: 24px 28px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

body.avd-page:not(.light-mode) .scenario-manager {
    background: rgba(30, 41, 59, 0.92);
    border-color: rgba(255, 255, 255, 0.08);
}

/* ============================================
   🔘 SCENARIO CONTROLS
   ============================================ */
.scenario-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.btn-scenario {
    background: linear-gradient(135deg, var(--ml-primary), var(--ml-secondary));
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-weight: 800;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    white-space: nowrap;
    font-family: inherit;
}

.btn-scenario:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.saved-scenarios-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.saved-scenario-card {
    background: #f8fafc;
    border: 1px solid var(--border-light);
    border-left: 4px solid var(--ml-primary);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-smooth);
}

.saved-scenario-card:hover {
    transform: translateX(3px);
    box-shadow: var(--shadow-sm);
}

body.avd-page:not(.light-mode) .saved-scenario-card {
    background: rgba(15, 23, 42, 0.6);
    border-color: rgba(148, 163, 184, 0.1);
    border-left-color: var(--ml-primary);
}

.scenario-info h4 {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 4px 0;
}

.scenario-info p {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin: 0;
    font-weight: 600;
}

.scenario-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.scenario-actions button {
    background: rgba(102, 126, 234, 0.08);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--ml-primary);
    transition: var(--transition-smooth);
    padding: 7px 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    min-height: 34px;
    font-family: inherit;
}

.scenario-actions button:hover {
    background: rgba(102, 126, 234, 0.18);
    transform: scale(1.08);
}

/* ============================================
   📋 PARAMS PANEL
   ============================================ */
.params-panel {
    background: white;
    border-radius: var(--radius-xl);
    padding: 24px 28px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

body.avd-page:not(.light-mode) .params-panel {
    background: rgba(30, 41, 59, 0.92);
    border-color: rgba(255, 255, 255, 0.08);
}

.params-panel::before,
.results-panel::before { display: none !important; }

/* ============================================
   📊 ADVANCED SECTION
   ============================================ */
.advanced-section {
    background: #f8fafc;
    border: 1px solid var(--border-light);
    border-left: 3px solid var(--ml-primary);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    margin-bottom: 18px;
}

body.avd-page:not(.light-mode) .advanced-section {
    background: rgba(15, 23, 42, 0.5);
    border-color: rgba(148, 163, 184, 0.08);
    border-left-color: var(--ml-primary);
}

/* ============================================
   🔘 DISTRIBUTION GRID
   ============================================ */
.distribution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
}

.radio-card { position: relative; cursor: pointer; }

.radio-card input[type='radio'] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.radio-card-content {
    background: white;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 14px 10px;
    text-align: center;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

body.avd-page:not(.light-mode) .radio-card-content {
    background: rgba(15, 23, 42, 0.7);
    border-color: rgba(148, 163, 184, 0.12);
}

.radio-card input[type='radio']:checked + .radio-card-content {
    border-color: var(--ml-primary);
    background: rgba(102, 126, 234, 0.06);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.12);
    transform: translateY(-2px);
}

.radio-card-content i {
    font-size: 1.5rem;
    color: var(--ml-primary);
    transition: transform 0.2s ease;
}

.radio-card input[type='radio']:checked + .radio-card-content i { transform: scale(1.12); }

.radio-title {
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--text-primary);
}

.radio-desc {
    font-size: 0.70rem;
    color: var(--text-tertiary);
    font-weight: 600;
}

/* ============================================
   🔄 STRATEGY TOGGLE
   ============================================ */
.strategy-toggle {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 8px;
}

.toggle-option { position: relative; cursor: pointer; }

.toggle-option input[type='radio'] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-option span {
    display: block;
    background: white;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 11px 12px;
    text-align: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    cursor: pointer;
}

body.avd-page:not(.light-mode) .toggle-option span {
    background: rgba(15, 23, 42, 0.7);
    border-color: rgba(148, 163, 184, 0.12);
}

.toggle-option input[type='radio']:checked + span {
    background: linear-gradient(135deg, var(--ml-primary), var(--ml-secondary));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(102, 126, 234, 0.4);
    transform: translateY(-2px);
    font-weight: 800;
}

/* ============================================
   📊 PARAMS GRID
   ============================================ */
.params-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
    margin-bottom: 18px;
}

/* ============================================
   💎 PARAM GROUP
   ============================================ */
.param-group {
    background: #f8fafc;
    padding: 18px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    border-left: 4px solid var(--ml-primary);
    transition: var(--transition-smooth);
}

.param-group:hover {
    border-left-color: var(--ml-secondary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

body.avd-page:not(.light-mode) .param-group {
    background: rgba(15, 23, 42, 0.6);
    border-color: rgba(148, 163, 184, 0.08);
    border-left-color: var(--ml-primary);
}

.param-group label {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.70rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-tertiary);
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.param-group input {
    width: 100%;
    padding: 9px 12px;
    border: 1.5px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-size: 1.4rem;
    font-weight: 900;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    background: white;
    box-sizing: border-box;
    font-family: inherit;
}

.param-group input:focus {
    outline: none;
    border-color: var(--ml-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.10);
}

body.avd-page:not(.light-mode) .param-group input {
    background: rgba(15, 23, 42, 0.5);
    border-color: rgba(148, 163, 184, 0.12);
    color: #f1f5f9;
}

.param-group .hint {
    font-size: 0.70rem;
    color: var(--text-tertiary);
    margin-top: 5px;
    font-weight: 600;
    font-style: italic;
}

/* ============================================
   ❓ HELP ICON
   ============================================ */
.help-icon {
    background: rgba(0, 0, 0, 0.06);
    border: 1.5px solid rgba(0, 0, 0, 0.12);
    color: var(--text-secondary);
    border-radius: 50%;
    font-size: 0.58rem;
    font-weight: 900;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition-smooth);
    width: 20px;
    height: 20px;
    min-width: 20px;
    min-height: 20px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 0;
    vertical-align: middle;
}

.help-icon::after {
    content: '';
    position: absolute;
    inset: -11px;
    z-index: -1;
}

.help-icon:hover {
    background: rgba(102, 126, 234, 0.12);
    border-color: var(--ml-primary);
    color: var(--ml-primary);
    transform: scale(1.12);
}

.help-icon-small {
    width: 17px;
    height: 17px;
    min-width: 17px;
    min-height: 17px;
    font-size: 0.52rem;
}

.help-icon-small::after { inset: -13px; }

/* ============================================
   🔄 ADVANCED TOGGLES (checkboxes)
   ============================================ */
.advanced-toggles {
    background: #f8fafc;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

body.avd-page:not(.light-mode) .advanced-toggles {
    background: rgba(15, 23, 42, 0.4);
    border-color: rgba(148, 163, 184, 0.08);
}

.toggle-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    padding: 3px 0;
    user-select: none;
}

.toggle-checkbox:hover {
    color: var(--ml-primary);
    transform: translateX(3px);
}

.toggle-checkbox input[type='checkbox'] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--ml-primary);
    flex-shrink: 0;
}

/* ============================================
   🚀 SIMULATE BUTTON
   ============================================ */
.btn-simulate {
    background: linear-gradient(135deg, var(--ml-primary), var(--ml-secondary));
    color: white;
    padding: 15px 28px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    transition: var(--transition-smooth);
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
    font-family: inherit;
}

.btn-simulate::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 60%;
    height: 200%;
    background: rgba(255, 255, 255, 0.22);
    transform: skewX(-20deg);
    transition: left 0.55s ease;
}

.btn-simulate:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.5);
}

.btn-simulate:hover::before { left: 130%; }
.btn-simulate:active { transform: translateY(0) scale(0.99); }

/* ============================================
   📊 SIMULATION PROGRESS
   ============================================ */
.simulation-progress { margin-top: 18px; }

.progress-bar {
    width: 100%;
    height: 8px;
    background: #f1f5f9;
    border-radius: 50px;
    overflow: hidden;
    border: 1px solid var(--border-light);
}

body.avd-page:not(.light-mode) .progress-bar {
    background: rgba(15, 23, 42, 0.5);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--ml-primary), var(--ml-secondary), var(--ml-accent));
    background-size: 200% 100%;
    border-radius: 50px;
    transition: width 0.3s ease;
    animation: mcProgressShimmer 2s linear infinite;
}

@keyframes mcProgressShimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.progress-text {
    text-align: center;
    margin-top: 7px;
    font-weight: 700;
    font-size: 0.82rem;
    color: var(--ml-primary);
}

/* ============================================
   📊 RESULTS PANEL
   ============================================ */
.results-panel {
    background: white;
    border-radius: var(--radius-xl);
    padding: 24px 28px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

body.avd-page:not(.light-mode) .results-panel {
    background: rgba(30, 41, 59, 0.92);
    border-color: rgba(255, 255, 255, 0.08);
}

.results-panel.hidden { display: none; }

/* ============================================
   📤 EXPORT CONTROLS
   ============================================ */
.export-controls {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    margin-bottom: 20px;
}

.btn-export {
    background: linear-gradient(135deg, var(--ml-success), #38f9d7);
    color: white;
    border: none;
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    font-weight: 800;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    flex: 1;
    white-space: nowrap;
    font-family: inherit;
}

.btn-export:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
}

/* ============================================
   📈 STATS GRID
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(175px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

/* ============================================
   💎 STAT BOX
   ============================================ */
.stat-box {
    background: rgba(102, 126, 234, 0.05);
    border: 1.5px solid rgba(102, 126, 234, 0.14);
    border-radius: var(--radius-md);
    padding: 16px 14px;
    text-align: center;
    transition: var(--transition-smooth);
}

.stat-box:hover {
    transform: translateY(-3px);
    border-color: rgba(102, 126, 234, 0.28);
    box-shadow: var(--shadow-sm);
}

body.avd-page:not(.light-mode) .stat-box {
    background: rgba(102, 126, 234, 0.07);
    border-color: rgba(102, 126, 234, 0.18);
}

.stat-box .label {
    font-size: 0.66rem;
    color: var(--text-tertiary);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 7px;
}

.stat-box .value {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--ml-primary);
    line-height: 1.1;
}

.stat-box.positive .value { color: var(--ml-success); }
.stat-box.positive { background: rgba(16,185,129,0.05); border-color: rgba(16,185,129,0.18); }
.stat-box.negative .value { color: var(--ml-danger); }
.stat-box.negative { background: rgba(239,68,68,0.05); border-color: rgba(239,68,68,0.18); }
.stat-box.warning .value { color: var(--ml-warning); }
.stat-box.warning { background: rgba(245,158,11,0.05); border-color: rgba(245,158,11,0.18); }

/* ============================================
   📊 CHARTS
   ============================================ */
.chart {
    min-height: 440px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: white;
    border: 1px solid var(--border-light);
    padding: 6px;
    margin-bottom: 20px;
}

.chart-medium { min-height: 380px; }

body.avd-page:not(.light-mode) .chart,
body.avd-page:not(.light-mode) .chart-medium {
    background: rgba(30, 41, 59, 0.92);
    border-color: rgba(148, 163, 184, 0.1);
}

.charts-grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

/* ============================================
   📐 MODAL STYLES
      (namespace .modal — no conflict with .avd-modal-overlay)
   ============================================ */
.modal {
    display: none;
    position: fixed;
    z-index: 99999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0);
    justify-content: center;
    align-items: center;
    transition: background-color 0.25s ease;
    padding: 16px;
    box-sizing: border-box;
}

.modal.active {
    background-color: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(6px);
}

.modal-content {
    background: white;
    border-radius: var(--radius-xl);
    max-width: 660px;
    width: 100%;
    max-height: 88vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
    opacity: 0;
    transform: translateY(24px) scale(0.96);
    transition: all 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal.active .modal-content {
    opacity: 1;
    transform: translateY(0) scale(1);
}

body.avd-page:not(.light-mode) .modal-content {
    background: #1e293b;
}

.modal-header {
    background: linear-gradient(135deg, var(--ml-primary) 0%, var(--ml-secondary) 100%);
    padding: 20px 24px;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1;
}

.modal-header h2 {
    font-size: 1.2rem;
    font-weight: 900;
    color: white;
    margin: 0;
}

.close-modal {
    background: rgba(255, 255, 255, 0.18);
    border: 2px solid rgba(255, 255, 255, 0.35);
    color: white;
    border-radius: 50%;
    width: 34px;
    height: 34px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    flex-shrink: 0;
    touch-action: manipulation;
    line-height: 1;
    font-family: inherit;
}

.close-modal:hover {
    background: rgba(255, 255, 255, 0.32);
    transform: rotate(90deg) scale(1.08);
}

.modal-body {
    padding: 22px 26px;
    color: var(--text-primary);
    line-height: 1.75;
}

body.avd-page:not(.light-mode) .modal-body { color: #f1f5f9; }

.modal-body h3 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--ml-primary);
    margin: 20px 0 9px 0;
}

.modal-body h3:first-child { margin-top: 0; }

.modal-body h4 {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--ml-secondary);
    margin: 14px 0 7px 0;
}

.modal-body p {
    margin-bottom: 10px;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

body.avd-page:not(.light-mode) .modal-body p { color: #cbd5e1; }

.modal-body ul, .modal-body ol { margin-left: 18px; margin-bottom: 10px; }

.modal-body li {
    margin-bottom: 4px;
    font-size: 0.86rem;
    color: var(--text-secondary);
}

body.avd-page:not(.light-mode) .modal-body li { color: #cbd5e1; }

/* Scrollbar modal */
.modal-content::-webkit-scrollbar        { width: 5px; }
.modal-content::-webkit-scrollbar-thumb  { background: linear-gradient(135deg, var(--ml-primary), var(--ml-secondary)); border-radius: 5px; }

/* ============================================
   ✅ MODAL LARGE
   ============================================ */
.modal-large .modal-content {
    max-width: 90%;
    width: 1100px;
}

/* ============================================
   ✅ SCENARIO CHECKBOXES
   ============================================ */
.scenario-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    cursor: pointer;
}

.scenario-checkbox input[type='checkbox'] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--ml-primary);
    flex-shrink: 0;
}

.scenario-checkbox label {
    cursor: pointer;
    font-weight: 700;
    font-size: 0.86rem;
    color: var(--text-primary);
    user-select: none;
}

body.avd-page:not(.light-mode) .scenario-checkbox label { color: #f1f5f9; }

.scenario-selection-container {
    background: rgba(102, 126, 234, 0.05);
    border: 1px solid rgba(102, 126, 234, 0.14);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 16px;
}

/* ============================================
   🏷 COMPARISON STATS
   ============================================ */
.comparison-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 5px 11px;
    background: #f8fafc;
    border: 1px solid var(--border-light);
    border-radius: 20px;
}

body.avd-page:not(.light-mode) .legend-item { background: rgba(15, 23, 42, 0.6); }

.legend-color {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    flex-shrink: 0;
}

.legend-label {
    font-weight: 700;
    font-size: 0.82rem;
    color: var(--text-primary);
}

.comparison-stat-box {
    background: rgba(102, 126, 234, 0.04);
    border: 1px solid rgba(102, 126, 234, 0.12);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    transition: var(--transition-smooth);
}

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

.comparison-stat-box h4 {
    font-size: 0.66rem;
    font-weight: 800;
    color: var(--text-tertiary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.comparison-values { display: flex; flex-direction: column; gap: 5px; }

.comparison-value-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 9px;
    background: white;
    border-radius: 7px;
    border-left: 3px solid;
}

body.avd-page:not(.light-mode) .comparison-value-item { background: rgba(15, 23, 42, 0.6); }

.comparison-value-name {
    font-weight: 700;
    font-size: 0.80rem;
    color: var(--text-secondary);
}

.comparison-value-number {
    font-weight: 900;
    font-size: 0.92rem;
    color: var(--ml-primary);
}

/* ============================================
   🎬 ANIMATIONS
   ============================================ */
@keyframes mcFadeInUp {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}

.results-panel > * {
    animation: mcFadeInUp 0.35s ease-out backwards;
}

.results-panel > *:nth-child(1) { animation-delay: 0.04s; }
.results-panel > *:nth-child(2) { animation-delay: 0.08s; }
.results-panel > *:nth-child(3) { animation-delay: 0.12s; }
.results-panel > *:nth-child(4) { animation-delay: 0.16s; }
.results-panel > *:nth-child(5) { animation-delay: 0.20s; }
.results-panel > *:nth-child(6) { animation-delay: 0.24s; }
.results-panel > *:nth-child(7) { animation-delay: 0.28s; }
.results-panel > *:nth-child(8) { animation-delay: 0.32s; }

/* ============================================
   📱 RESPONSIVE — ≤ 1024px
   ============================================ */
@media (max-width: 1024px) {
    .charts-grid-2 { grid-template-columns: 1fr; }
}

/* ============================================
   📱 RESPONSIVE — ≤ 768px
   ============================================ */
@media (max-width: 768px) {
    .quick-templates,
    .scenario-manager,
    .params-panel,
    .results-panel { padding: 18px 14px !important; border-radius: 16px !important; }

    .advanced-section { padding: 14px 12px !important; }

    .templates-grid    { grid-template-columns: 1fr 1fr !important; gap: 8px !important; }
    .params-grid       { grid-template-columns: 1fr 1fr !important; gap: 8px !important; }
    .strategy-toggle   { grid-template-columns: 1fr 1fr !important; gap: 7px !important; }
    .distribution-grid { grid-template-columns: 1fr 1fr !important; gap: 8px !important; }
    .stats-grid        { grid-template-columns: 1fr 1fr !important; gap: 8px !important; }

    .export-controls   { flex-wrap: nowrap !important; gap: 7px !important; }
    .btn-export        { flex: 1 !important; padding: 9px 7px !important; font-size: 0.76rem !important; }
    .scenario-controls { flex-wrap: nowrap !important; gap: 7px !important; }
    .btn-scenario      { flex: 1 !important; padding: 9px 5px !important; font-size: 0.70rem !important; }

    .template-btn       { padding: 15px 9px !important; }
    .param-group        { padding: 14px 10px !important; }
    .radio-card-content { padding: 12px 9px !important; }
    .toggle-option span { padding: 10px 9px !important; font-size: 0.80rem !important; }
    .stat-box           { padding: 13px 9px !important; }
    .stat-box .value    { font-size: 1.35rem !important; }
    .stat-box .label    { font-size: 0.60rem !important; }

    .section-title          { font-size: 1.1rem !important; }
    .panel-title            { font-size: 1.1rem !important; }
    .subsection-title       { font-size: 0.92rem !important; }
    .advanced-section-title { font-size: 0.84rem !important; }

    .template-btn i       { font-size: 1.6rem !important; }
    .template-name        { font-size: 0.82rem !important; }
    .template-desc        { font-size: 0.68rem !important; }
    .radio-card-content i { font-size: 1.35rem !important; }
    .radio-title          { font-size: 0.78rem !important; }
    .radio-desc           { font-size: 0.66rem !important; }

    .help-icon { width: 17px !important; height: 17px !important; min-width: 17px !important; min-height: 17px !important; font-size: 0.50rem !important; }

    .btn-simulate { font-size: 0.92rem !important; padding: 13px 20px !important; }

    .charts-grid-2 { gap: 12px !important; }
    .chart         { min-height: 300px !important; padding: 4px !important; }
    .chart-medium  { min-height: 260px !important; }

    .saved-scenarios-list { grid-template-columns: 1fr !important; }

    .modal         { padding: 0 !important; align-items: flex-end !important; }
    .modal-content { max-width: 100% !important; max-height: 92vh !important; border-radius: 20px 20px 0 0 !important; }
    .modal-header  { border-radius: 20px 20px 0 0 !important; padding: 16px 14px !important; }
    .modal-body    { padding: 16px 14px !important; }
}

/* ============================================
   📱 RESPONSIVE — ≤ 480px
   ============================================ */
@media (max-width: 480px) {
    .templates-grid    { gap: 7px !important; }
    .params-grid       { gap: 7px !important; }
    .distribution-grid { gap: 7px !important; }
    .stats-grid        { gap: 7px !important; }

    .export-controls   { gap: 5px !important; }
    .btn-export        { padding: 8px 5px !important; font-size: 0.72rem !important; }
    .scenario-controls { gap: 5px !important; }
    .btn-scenario      { padding: 8px 3px !important; font-size: 0.65rem !important; }

    .template-btn       { padding: 13px 7px !important; }
    .param-group        { padding: 12px 9px !important; }
    .radio-card-content { padding: 11px 7px !important; }
    .stat-box           { padding: 11px 7px !important; }
    .stat-box .value    { font-size: 1.15rem !important; }

    .section-title          { font-size: 1rem !important; }
    .panel-title            { font-size: 1rem !important; }
    .subsection-title       { font-size: 0.85rem !important; }
    .template-btn i         { font-size: 1.4rem !important; }
    .radio-card-content i   { font-size: 1.2rem !important; }
    .btn-simulate           { font-size: 0.86rem !important; padding: 12px 16px !important; }
    .chart                  { min-height: 260px !important; }
    .chart-medium           { min-height: 220px !important; }
    .quick-templates,
    .scenario-manager,
    .params-panel,
    .results-panel          { padding: 14px 10px !important; }
}

/* ============================================
   📱 RESPONSIVE — ≤ 375px (iPhone SE)
   ============================================ */
@media (max-width: 375px) {
    .templates-grid,
    .params-grid,
    .strategy-toggle,
    .distribution-grid,
    .stats-grid { grid-template-columns: 1fr 1fr !important; gap: 5px !important; }

    .export-controls, .scenario-controls { gap: 4px !important; }
    .btn-export   { padding: 7px 3px !important; font-size: 0.66rem !important; }
    .btn-scenario { padding: 7px 2px !important; font-size: 0.60rem !important; }
    .stat-box .value { font-size: 1.05rem !important; }
    .quick-templates,
    .scenario-manager,
    .params-panel,
    .results-panel { padding: 12px 8px !important; }
}