/* Empty State (Generic) */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 240px;
    gap: 16px;
    color: var(--text-dim);
    text-align: center;
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    margin-top: 10px;
    background: rgba(255, 255, 255, 0.015);
    transition: background 0.3s;
}

[data-theme='light'] .empty-state {
    border-color: #cbd5e1;
    background: #f8fafc;
}

.empty-state i {
    font-size: 48px;
    color: var(--text-muted);
    opacity: 0.5;
    margin-bottom: 8px;
}

.empty-state h4 {
    margin: 0 0 8px 0;
    font-size: 18px;
    color: var(--text-main);
    font-weight: 600;
}

.empty-state p {
    font-size: 15px;
    max-width: 280px;
    line-height: 1.6;
    margin: 0;
    color: var(--text-dim);
}

/* Check result */
.check-result-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 240px;
    gap: 16px;
    color: var(--text-dim);
    text-align: center;
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    margin-top: 10px;
}

[data-theme='light'] .check-result-placeholder {
    border-color: #cbd5e1;
    background: #f8fafc;
}

.check-result-placeholder i {
    font-size: 48px;
    color: var(--text-muted);
    opacity: 0.5;
    margin-bottom: 8px;
}

.check-result-placeholder p {
    font-size: 15px;
    max-width: 250px;
    line-height: 1.5;
    margin: 0;
}

.check-result {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.check-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.check-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.check-card {
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

[data-theme='light'] .check-card {
    background: #ffffff;
    border-color: #e2e8f0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.check-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--border-light);
}

[data-theme='light'] .check-card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: #cbd5e1;
}

.check-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

[data-theme='light'] .check-head {
    border-bottom-color: #e2e8f0;
}

.check-head .title {
    font-weight: 700;
    font-size: 16px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.check-head .badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    border: 1px solid transparent;
    color: var(--text-main);
}

.check-head .badge.ok {
    border-color: rgba(16, 185, 129, 0.3);
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.check-head .badge.no {
    border-color: rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.check-section .label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.check-section .meta {
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.1);
    padding: 8px 12px;
    border-radius: 8px;
}

[data-theme='light'] .check-section .meta {
    background: #f1f5f9;
    color: #475569;
}

/* Custom Tooltip */
.tooltip-container {
    position: relative;
    display: inline-block;
    cursor: help;
    margin-left: 4px;
    vertical-align: middle;
}

.tooltip-container .ph-info {
    font-size: 16px;
    color: var(--text-muted);
}

.tooltip-text {
    visibility: hidden;
    width: 220px;
    background-color: rgba(0, 0, 0, 0.9);
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1000;
    bottom: 125%;
    /* Position above */
    left: 50%;
    margin-left: -110px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 12px;
    font-weight: normal;
    pointer-events: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border);
}

.tooltip-text::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: rgba(0, 0, 0, 0.9) transparent transparent transparent;
}

.tooltip-container:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* --- Hot & Cold Analysis Grid --- */
.hot-cold-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-col h4 {
    margin: 0 0 12px 0;
    font-size: 16px;
    color: var(--text-main);
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.stat-col.hot h4 {
    color: var(--accent);
}

.stat-col.cold h4 {
    color: var(--secondary);
}

.stat-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed var(--border);
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-row .count {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

/* --- Mobile Optimization (Phase 5) --- */
@media (max-width: 768px) {
    .page {
        padding: 24px 16px;
        padding-bottom: calc(112px + env(safe-area-inset-bottom, 20px));
        max-width: 100%;
    }

    .page-header {
        margin-bottom: 24px;
    }

    .page-header h2 {
        font-size: 26px;
    }

    .subtitle {
        font-size: 14px;
        margin-top: 4px;
    }

    .dashboard-grid {
        gap: 16px;
        grid-template-columns: 1fr;
    }

    /* Stats Tab Density */
    #page-stats .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    #page-stats .card {
        padding: 16px;
        border-radius: 16px;
    }

    /* Num Dist Chart - Spans Full Width */
    #page-stats .card:nth-child(1) {
        grid-column: 1 / -1;
    }

    #page-stats .card-header {
        margin-bottom: 12px;
    }

    #page-stats .card-header h3 {
        font-size: 15px;
    }

    /* Hot/Cold Mobile */
    .hot-cold-grid {
        gap: 12px;
    }

    .stat-col h4 {
        font-size: 14px;
        margin-bottom: 8px;
    }

    .stat-row {
        padding: 4px 0;
    }

    .stat-row .count {
        font-size: 12px;
    }

    /* Ultra Small Screens < 360px */
    @media (max-width: 360px) {
        #page-stats .dashboard-grid {
            grid-template-columns: 1fr;
        }
    }

    /* Main Generator Fixes */
    .card {
        padding: 20px;
        border-radius: 20px;
    }

    /* Fix clipping/boxing in Generator */
    #page-gen .card {
        overflow: visible;
    }

    /* Keep all generated balls visible on narrow screens */
    #page-gen .result-list {
        max-height: none;
        overflow: visible;
        padding-right: 0;
    }

    #page-gen .result-item {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 16px;
        overflow: visible;
    }

    #page-gen .result-balls {
        width: 100%;
        min-width: 0;
        justify-content: center;
    }

    #page-gen .result-actions {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 6px;
    }

    #page-gen .result-actions .icon-btn {
        font-size: 18px;
        padding: 8px;
    }

    .ball-container {
        gap: 8px;
        justify-content: center;
        margin: 10px 0;
    }

    .ball {
        width: 36px;
        height: 36px;
        font-size: 15px;
    }

    .ball.sm {
        width: 26px;
        height: 26px;
        font-size: 11px;
    }

    .action-area .btn {
        padding: 16px;
    }

    /* Pairs Grid Gap Reduction */
    .pairs-grid {
        gap: 8px;
        grid-template-columns: repeat(2, 1fr);
    }

    .pair-card {
        padding: 10px;
    }

    /* Check/Stats Layout Adjustments */
    .pie-chart-container {
        flex-direction: column;
        gap: 16px;
    }

    /* Mobile Header & Nav (Premium Glassmorphism) */
    .sidebar {
        display: none;
    }

    .mobile-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 16px 20px;
        background: rgba(11, 11, 26, 0.75);
        backdrop-filter: blur(16px) saturate(140%);
        -webkit-backdrop-filter: blur(16px) saturate(140%);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        position: sticky;
        top: 0;
        z-index: 100;
    }

    [data-theme='light'] .mobile-header {
        background: rgba(255, 255, 255, 0.85);
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    }

    .mobile-header .brand {
        margin: 0;
        font-size: 20px;
    }

    .bottom-nav {
        display: grid;
        grid-template-columns: repeat(6, minmax(0, 1fr));
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        min-height: calc(80px + env(safe-area-inset-bottom, 20px));
        padding: 8px 6px calc(8px + env(safe-area-inset-bottom, 20px));
        background: rgba(11, 11, 26, 0.88);
        backdrop-filter: blur(16px) saturate(140%);
        -webkit-backdrop-filter: blur(16px) saturate(140%);
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        z-index: 100;
        box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.4);
        gap: 4px;
    }

    [data-theme='light'] .bottom-nav {
        background: rgba(255, 255, 255, 0.9);
        border-top: 1px solid rgba(0, 0, 0, 0.08);
        box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.05);
    }

    .bottom-nav .nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 6px;
        min-height: 64px;
        color: var(--text-muted);
        font-size: 12px;
        font-weight: 700;
        border: none;
        background: transparent;
        transition:
            transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
            color 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
            background-color 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
            box-shadow 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
        padding: 10px 4px;
        border-radius: 16px;
        min-width: 0;
        opacity: 0.78;
    }

    .bottom-nav .nav-item span {
        line-height: 1.15;
        word-break: keep-all;
        letter-spacing: -0.01em;
    }

    .bottom-nav .nav-item i {
        font-size: 20px;
        transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    .bottom-nav .nav-item.active {
        color: var(--primary);
        background: rgba(139, 92, 246, 0.12);
        box-shadow: inset 0 0 0 1px rgba(139, 92, 246, 0.18);
        border: none;
        opacity: 1;
    }

    .bottom-nav .nav-item.active i {
        transform: translateY(-2px) scale(1.08);
        filter: drop-shadow(0 4px 8px rgba(139, 92, 246, 0.6));
    }

    [data-theme='light'] .bottom-nav .nav-item {
        opacity: 0.86;
    }

    [data-theme='light'] .bottom-nav .nav-item.active {
        background: rgba(99, 102, 241, 0.1);
        box-shadow: inset 0 0 0 1px rgba(99, 102, 241, 0.18);
    }

    [data-theme='light'] .bottom-nav .nav-item.active i {
        filter: drop-shadow(0 4px 8px rgba(99, 102, 241, 0.4));
    }

    .page {
        padding-bottom: calc(108px + env(safe-area-inset-bottom, 20px));
    }

    #openQrScannerBtn {
        position: static !important;
        width: 100%;
        margin-bottom: 16px;
    }

    .check-ticket-status-row {
        gap: 8px;
    }

    .check-target-list {
        max-height: none;
        padding-right: 0;
    }

    .check-target-card {
        padding: 14px;
    }

    .check-target-card-head {
        flex-direction: column;
        align-items: flex-start;
    }

    .check-target-card-meta {
        text-align: left;
    }

    .preset-bar {
        grid-template-columns: 1fr;
    }

    .preset-actions {
        justify-content: stretch;
    }

    .preset-actions .btn {
        flex: 1 1 calc(33.333% - 6px);
        min-height: 42px;
        font-size: 14px;
    }
}

/* Page Transition Enhancements */
.page {
    animation: pageEnter 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
    will-change: transform, opacity;
}

@keyframes pageEnter {
    0% {
        opacity: 0;
        transform: translateY(15px) scale(0.99);
    }

    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ==================== Model Guide Section ==================== */
.model-guide-section {
    margin-top: 40px;
    text-align: left;
}

/* --- Selected Model Detail Card --- */
.guide-selected {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.08), rgba(59, 130, 246, 0.06));
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}

.guide-selected-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 8px;
}

.guide-selected-header h3 {
    margin: 0;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.guide-tier-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 999px;
    border: 1.5px solid;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
    background: rgba(0, 0, 0, 0.2);
}

.guide-selected-body h4 {
    margin: 0 0 10px 0;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
}

.guide-desc {
    margin: 0;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

.guide-desc strong {
    color: var(--primary);
    font-weight: 600;
}

.guide-warning {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.25);
    color: var(--warning);
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.guide-default-filters {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    background: rgba(139, 92, 246, 0.06);
    border: 1px solid rgba(139, 92, 246, 0.15);
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.5;
}

.guide-default-filters strong {
    color: var(--text-main);
}

/* --- All Models Header --- */
.guide-all-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.guide-all-header h3 {
    margin: 0;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.guide-count {
    font-size: 13px;
    color: var(--text-dim);
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 10px;
    border-radius: 999px;
}

/* --- Guide Grid --- */
.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.guide-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 14px;
    cursor: pointer;
    transition:
        transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
        border-color 0.25s cubic-bezier(0.4, 0, 0.2, 1),
        background-color 0.25s cubic-bezier(0.4, 0, 0.2, 1),
        box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
}

.guide-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--border-light);
    transform: translateY(-2px);
}

.guide-item.active {
    border-color: var(--primary);
    background: rgba(139, 92, 246, 0.08);
    box-shadow: 0 0 0 1px var(--primary-glow);
}

.guide-item-head {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
}

.guide-item-tier {
    font-size: 14px;
}

.guide-item-head strong {
    font-size: 13px;
    color: var(--text-main);
    font-weight: 600;
}

.guide-exp-tag {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(251, 191, 36, 0.15);
    color: var(--warning);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.guide-item p {
    margin: 0;
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.4;
}

/* --- Filter Notice --- */
.guide-filter-notice {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    background: rgba(96, 165, 250, 0.06);
    border: 1px solid rgba(96, 165, 250, 0.15);
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

.guide-filter-notice i {
    color: var(--info, #60a5fa);
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

.guide-filter-notice strong {
    color: var(--warning);
}

/* --- Light Theme Overrides --- */
[data-theme='light'] .guide-selected {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06), rgba(59, 130, 246, 0.04));
    border-color: rgba(99, 102, 241, 0.2);
}

[data-theme='light'] .guide-item {
    background: rgba(0, 0, 0, 0.02);
    border-color: #e2e8f0;
}

[data-theme='light'] .guide-item:hover {
    background: rgba(0, 0, 0, 0.04);
    border-color: #cbd5e1;
}

[data-theme='light'] .guide-item.active {
    background: rgba(99, 102, 241, 0.06);
    border-color: var(--primary);
}

[data-theme='light'] .guide-filter-notice {
    background: rgba(59, 130, 246, 0.06);
    border-color: rgba(59, 130, 246, 0.15);
}

[data-theme='light'] .guide-tier-badge {
    background: rgba(255, 255, 255, 0.8);
}

@media (max-width: 640px) {
    .bt-action-row {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    #settingsModal {
        align-items: flex-end;
        padding: max(12px, env(safe-area-inset-top)) 0 0;
    }

    #dialogModal,
    #mobileMoreModal {
        align-items: flex-end;
        padding: max(12px, env(safe-area-inset-top)) 0 0;
    }

    .settings-modal-content {
        width: min(100vw, 420px);
        max-width: none;
        max-height: min(92dvh, 860px);
        margin-top: auto;
        padding: 20px 16px calc(18px + env(safe-area-inset-bottom, 20px));
        border-radius: 24px 24px 0 0;
        gap: 18px;
    }

    .settings-modal-header {
        align-items: flex-start;
        gap: 14px;
    }

    .settings-modal-header h3 {
        font-size: 20px;
        line-height: 1.25;
        word-break: keep-all;
    }

    .settings-modal-header .subtitle {
        margin-top: 8px;
    }

    .settings-modal-header .icon-btn {
        flex-shrink: 0;
    }

    .settings-modal-body {
        overflow-x: hidden;
        overflow-y: auto;
        padding-right: 0;
        gap: 16px;
        overscroll-behavior: contain;
    }

    .settings-grid-top,
    .settings-grid-bottom,
    .sync-meta-grid,
    .data-summary-grid,
    .settings-theme-switch {
        grid-template-columns: minmax(0, 1fr) !important;
    }

    .settings-panel {
        width: 100%;
        min-width: 0;
        padding: 18px;
        gap: 14px;
    }

    .settings-panel-head {
        flex-direction: column;
        gap: 10px;
    }

    .settings-panel-head .badge {
        align-self: flex-start;
    }

    .dialog-modal-content,
    .more-sheet-content {
        width: min(100vw, 420px);
        max-width: none;
        margin-top: auto;
        padding: 20px 16px calc(18px + env(safe-area-inset-bottom, 20px));
        border-radius: 24px 24px 0 0;
        transform: translateY(24px);
    }

    #dialogModal.active .dialog-modal-content,
    #mobileMoreModal.active .more-sheet-content {
        transform: translateY(0);
    }

    .dialog-modal-actions .btn {
        width: 100%;
    }

    .more-sheet-header h3 {
        font-size: 22px;
    }

    .more-sheet-action {
        min-height: 58px;
        padding: 16px 18px;
    }

    .settings-button-group {
        flex-direction: column;
    }

    .settings-button-group .btn {
        width: 100%;
    }

    .sync-meta-item,
    .data-summary-item {
        min-width: 0;
    }

    .sync-meta-item strong,
    .data-summary-item strong {
        overflow-wrap: anywhere;
    }

    .settings-note,
    .settings-caption {
        overflow-wrap: anywhere;
    }

    .settings-sync-log {
        max-height: 180px;
    }
}

@media (max-width: 768px) {
    .feature-overview {
        flex-wrap: nowrap;
        overflow-x: auto;
        margin: -6px -16px 18px;
        padding: 0 16px 4px;
        scrollbar-width: none;
    }

    .feature-overview::-webkit-scrollbar {
        display: none;
    }

    .feature-chip {
        flex: 0 0 auto;
        min-height: 36px;
        font-size: 12px;
    }

    .workflow-grid,
    .analytics-grid,
    .data-hub-grid {
        grid-template-columns: minmax(0, 1fr) !important;
    }

    .section-header {
        align-items: stretch;
        flex-direction: column;
    }

    .section-header .actions {
        justify-content: stretch;
    }

    .section-header .actions .btn {
        flex: 1;
    }

    .recommendation-workbench .ai-orb {
        width: 100%;
        padding: 20px;
    }

    .recommendation-workbench #aiPredictBtn {
        width: 100%;
        align-self: stretch;
    }

    .metric-card,
    .metric-card-wide {
        min-height: 0;
    }

    .data-card .card-header,
    .p720-status-card .card-header {
        align-items: stretch;
        flex-direction: column;
    }

    .data-backup-card .button-group .btn {
        flex-basis: 100%;
        width: 100%;
    }

    #openQrScannerBtn {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .ai-container.fx-active .orb-visual,
    .ai-container.fx-active .orb-visual::after {
        animation: none !important;
    }
}