/**
 * VECTOR Game v2.0 - Modal Styles
 * Modal dialogs, overlays, and popup components
 */

/* ============================================
   MODAL OVERLAY
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 24px;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ============================================
   MODAL CONTAINER
   ============================================ */
.modal {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border: var(--border-light);
    box-shadow: var(--shadow-lg);
    max-width: 480px;
    width: 100%;
    max-height: calc(100vh - 48px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.3s ease;
}

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

/* ============================================
   MODAL HEADER
   ============================================ */
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--surface-dark);
    border-bottom: var(--border-subtle);
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    color: var(--text-muted);
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--surface-hover);
}

/* ============================================
   MODAL BODY
   ============================================ */
.modal-body {
    padding: 24px 20px;
    overflow-y: auto;
}

/* ============================================
   MODAL FOOTER
   ============================================ */
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 20px;
    background: var(--surface-dark);
    border-top: var(--border-subtle);
}

/* ============================================
   GAME OVER MODAL
   ============================================ */
.game-over-content {
    text-align: center;
}

.game-over-content .winner-icon {
    font-size: 4rem;
    margin-bottom: 16px;
}

.game-over-content .winner-icon.white {
    color: var(--color-white);
    text-shadow: var(--shadow-glow-blue);
}

.game-over-content .winner-icon.black {
    color: var(--color-black);
    text-shadow: var(--shadow-glow-red);
}

.game-over-content .winner-text {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.game-over-content .winner-text.white {
    color: var(--color-white);
}

.game-over-content .winner-text.black {
    color: var(--color-black);
}

.game-over-content .win-reason {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.game-over-content .game-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    padding: 16px;
    background: var(--surface-dark);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.game-over-content .stat {
    text-align: center;
}

.game-over-content .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.game-over-content .stat-label {
    font-size: 0.625rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* ============================================
   PROMOTION MODAL
   ============================================ */
.promotion-content h4 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    text-align: center;
}

.promotion-choices {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.promotion-choice {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 12px;
    background: var(--surface-dark);
    border: 2px solid var(--border-subtle);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.promotion-choice:hover {
    background: var(--surface-hover);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.promotion-choice.selected {
    border-color: var(--accent-blue);
    background: var(--color-white-bg);
}

.promotion-choice .choice-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.promotion-choice .choice-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.promotion-choice .choice-desc {
    font-size: 0.625rem;
    color: var(--text-muted);
    text-align: center;
}

/* Promotion choice colors */
.promotion-choice.lance:hover {
    border-color: var(--accent-purple);
}

.promotion-choice.field:hover {
    border-color: var(--accent-green);
}

.promotion-choice.guardian:hover {
    border-color: var(--accent-blue);
}

/* ============================================
   SETTINGS MODAL
   ============================================ */
.settings-section {
    margin-bottom: 24px;
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-section h4 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.settings-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: var(--border-subtle);
}

.settings-option:last-child {
    border-bottom: none;
}

.settings-option .option-label {
    display: flex;
    flex-direction: column;
}

.settings-option .option-title {
    font-size: 0.875rem;
    color: var(--text-primary);
}

.settings-option .option-desc {
    font-size: 0.625rem;
    color: var(--text-muted);
}

/* ============================================
   HELP/TUTORIAL MODAL
   ============================================ */
.help-content {
    max-height: 60vh;
    overflow-y: auto;
}

.help-section {
    margin-bottom: 24px;
}

.help-section:last-child {
    margin-bottom: 0;
}

.help-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-section h4::before {
    content: '';
    width: 4px;
    height: 16px;
    background: var(--accent-blue);
    border-radius: 2px;
}

.help-section p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 8px;
}

.help-section ul {
    list-style: none;
    padding-left: 0;
}

.help-section li {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.help-section li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
}

/* Piece reference in help */
.piece-reference {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin-top: 12px;
}

.piece-ref-item {
    text-align: center;
    padding: 12px 8px;
    background: var(--surface-dark);
    border-radius: var(--radius-sm);
}

.piece-ref-item .piece-symbol {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.piece-ref-item .piece-name {
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--text-primary);
}

.piece-ref-item .piece-abbrev {
    font-size: 0.5rem;
    color: var(--text-muted);
}

/* Keyboard shortcuts table */
.shortcuts-table {
    width: 100%;
    border-collapse: collapse;
}

.shortcuts-table tr {
    border-bottom: var(--border-subtle);
}

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

.shortcuts-table td {
    padding: 8px 0;
    font-size: 0.8125rem;
}

.shortcuts-table td:first-child {
    width: 80px;
}

.shortcuts-table kbd {
    display: inline-block;
    padding: 2px 8px;
    background: var(--surface-dark);
    border: var(--border-subtle);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-primary);
}

/* ============================================
   CONFIRM DIALOG
   ============================================ */
.confirm-content {
    text-align: center;
}

.confirm-content .confirm-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    color: var(--color-warning);
}

.confirm-content .confirm-message {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.confirm-content .confirm-submessage {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ============================================
   TOAST/NOTIFICATION (in-modal variant)
   ============================================ */
.modal-toast {
    padding: 12px 16px;
    background: var(--surface-dark);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-toast.success {
    border-left: 3px solid var(--color-win);
}

.modal-toast.error {
    border-left: 3px solid var(--color-lose);
}

.modal-toast.info {
    border-left: 3px solid var(--color-info);
}

/* ============================================
   SMALL MODAL VARIANT
   ============================================ */
.modal.small {
    max-width: 360px;
}

.modal.small .modal-body {
    padding: 20px;
}

/* ============================================
   LARGE MODAL VARIANT
   ============================================ */
.modal.large {
    max-width: 640px;
}

.modal.large .modal-body {
    max-height: 60vh;
}

/* ============================================
   RESPONSIVE MODALS
   ============================================ */
@media (max-width: 600px) {
    .modal-overlay {
        padding: 16px;
    }
    
    .modal {
        max-height: calc(100vh - 32px);
    }
    
    .modal-header,
    .modal-footer {
        padding: 12px 16px;
    }
    
    .modal-body {
        padding: 16px;
    }
    
    .modal-title {
        font-size: 1rem;
    }
    
    .promotion-choices {
        grid-template-columns: 1fr;
    }
    
    .game-over-content .game-stats {
        flex-direction: column;
        gap: 12px;
    }
    
    .piece-reference {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 400px) {
    .modal-footer {
        flex-direction: column;
    }
    
    .modal-footer .btn {
        width: 100%;
    }
}

/* ============================================
   TUTORIAL MODAL
   ============================================ */
.tutorial-content {
    max-height: 70vh;
    overflow-y: auto;
    padding-right: 8px;
}

.tutorial-content::-webkit-scrollbar {
    width: 6px;
}

.tutorial-content::-webkit-scrollbar-track {
    background: var(--surface-dark);
    border-radius: 3px;
}

.tutorial-content::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 3px;
}

.tutorial-intro {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.tutorial-intro strong {
    color: var(--accent-gold);
}

.tutorial-section {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: var(--border-subtle);
}

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

.tutorial-section h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tutorial-section h4::before {
    content: '';
    width: 4px;
    height: 18px;
    background: linear-gradient(180deg, var(--accent-blue), var(--accent-purple));
    border-radius: 2px;
}

.tutorial-section p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 10px;
}

.tutorial-section p:last-child {
    margin-bottom: 0;
}

.tutorial-section code {
    display: inline-block;
    padding: 2px 8px;
    background: var(--surface-dark);
    border: var(--border-subtle);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-gold);
}

.tutorial-section ul {
    list-style: none;
    padding-left: 0;
    margin: 12px 0;
}

.tutorial-section li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
    line-height: 1.5;
}

.tutorial-section li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-size: 0.75rem;
}

.tutorial-section li strong {
    color: var(--text-primary);
}

/* Tutorial collapse diagram */
.tutorial-diagram {
    margin-top: 14px;
    padding: 14px 16px;
    background: var(--surface-dark);
    border: var(--border-subtle);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-primary);
    white-space: pre;
    overflow-x: auto;
    line-height: 1.5;
}

/* Tutorial piece cards grid */
.tutorial-pieces-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.tutorial-piece-card {
    padding: 14px;
    background: var(--surface-dark);
    border: var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.tutorial-piece-card:hover {
    border-color: var(--border-light);
    background: var(--surface-hover);
}

.tutorial-piece-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.tutorial-piece-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-light);
    border: var(--border-subtle);
    border-radius: var(--radius-sm);
    font-size: 1.5rem;
}

.tutorial-piece-icon.white {
    background: linear-gradient(180deg, rgba(255,255,255,0.15), rgba(255,255,255,0.05));
    color: var(--color-white);
}

.tutorial-piece-icon.black {
    background: linear-gradient(180deg, rgba(0,0,0,0.4), rgba(0,0,0,0.2));
    color: var(--color-black);
}

.tutorial-piece-title {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.tutorial-piece-title b {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.tutorial-piece-title span {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.tutorial-piece-card ul {
    margin: 0;
    padding: 0;
}

.tutorial-piece-card li {
    font-size: 0.75rem;
    padding: 4px 0;
    padding-left: 14px;
}

.tutorial-piece-card li::before {
    content: '•';
    font-size: 0.7rem;
}

/* Tutorial navigation */
.tutorial-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: var(--border-subtle);
    margin-top: 16px;
}

.tutorial-dots {
    display: flex;
    gap: 8px;
}

.tutorial-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--surface-light);
    border: 1px solid var(--border-subtle);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tutorial-dot.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
}

.tutorial-dot:hover:not(.active) {
    background: var(--surface-hover);
}

.tutorial-buttons {
    display: flex;
    gap: 10px;
}

/* Tutorial checkbox */
.tutorial-footer-option {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding-top: 12px;
    border-top: var(--border-subtle);
}

.tutorial-footer-option label {
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
}

.tutorial-footer-option input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-blue);
}

/* Modal extra large for tutorial */
.modal.xl {
    max-width: 720px;
}

.modal.xl .modal-body {
    max-height: 70vh;
}

/* Responsive tutorial */
@media (max-width: 600px) {
    .tutorial-pieces-grid {
        grid-template-columns: 1fr;
    }
    
    .tutorial-piece-header {
        gap: 10px;
    }
    
    .tutorial-piece-icon {
        width: 38px;
        height: 38px;
        font-size: 1.25rem;
    }
}