/* ==================== RESET & BASE ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-red: #FF3B30;
    --color-blue: #007AFF;
    --color-yellow: #FFCC00;
    --color-green: #34C759;
    --color-orange: #FF9500;
    --color-purple: #AF52DE;
    --color-gray: #8E8E93;
    --color-gray6: #F2F2F7;
    --color-bg: #FFFFFF;
    --color-text: #000000;
    --color-secondary: #8E8E93;
    --color-separator: #C6C6C8;
    --tile-border: var(--color-gray);
    --tile-bg: var(--color-gray6);
    --nav-bg: #F8F8F8;
    --nav-border: #C6C6C8;
    --small-gap: 3px;
    --large-gap: 9px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-gray6: #1C1C1E;
        --color-bg: #000000;
        --color-text: #FFFFFF;
        --color-secondary: #98989D;
        --color-separator: #38383A;
        --tile-bg: #1C1C1E;
        --nav-bg: #1C1C1E;
        --nav-border: #38383A;
    }
}

html, body {
    height: 100%;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    -webkit-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* ==================== SCREENS ==================== */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    flex-direction: column;
}

.screen.active {
    display: flex;
}

/* Slide transitions */
.screen.slide-in-right {
    display: flex;
    animation: slideInRight 0.3s ease forwards;
}
.screen.slide-out-left {
    display: flex;
    animation: slideOutLeft 0.3s ease forwards;
}
.screen.slide-in-left {
    display: flex;
    animation: slideInLeft 0.3s ease forwards;
}
.screen.slide-out-right {
    display: flex;
    animation: slideOutRight 0.3s ease forwards;
}

@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}
@keyframes slideOutLeft {
    from { transform: translateX(0); }
    to { transform: translateX(-100%); }
}
@keyframes slideInLeft {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}
@keyframes slideOutRight {
    from { transform: translateX(0); }
    to { transform: translateX(100%); }
}

/* ==================== NAVBAR ==================== */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 44px;
    min-height: 44px;
    padding: 0 8px;
    background: var(--nav-bg);
    border-bottom: 0.5px solid var(--nav-border);
    position: relative;
    z-index: 10;
}

.nav-title {
    font-size: 17px;
    font-weight: 600;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}

.nav-btn {
    background: none;
    border: none;
    color: var(--color-blue);
    font-size: 17px;
    cursor: pointer;
    padding: 4px 8px;
    white-space: nowrap;
}

.nav-btn:active {
    opacity: 0.5;
}

.nav-btn-danger {
    color: var(--color-red);
}

.nav-btn-left {
    font-size: 17px;
}

.info-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    color: var(--color-secondary);
    opacity: 0.7;
    transition: opacity 0.2s;
}

.info-btn:hover {
    opacity: 1;
}

.nav-btn-right {
    font-weight: 600;
}

.nav-actions {
    display: flex;
    gap: 4px;
}

/* ==================== SCREEN CONTENT ==================== */
.screen-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ==================== NUMBER MODE BAR ==================== */
.number-mode-bar {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 12px;
}

/* ==================== SEGMENT CONTROL ==================== */
.segment-control {
    display: inline-flex;
    background: var(--color-gray6);
    border-radius: 8px;
    padding: 2px;
    gap: 0;
}

.segment {
    background: transparent;
    border: none;
    border-radius: 6px;
    padding: 5px 14px;
    font-size: 13px;
    cursor: pointer;
    color: var(--color-text);
    transition: background 0.2s, box-shadow 0.2s;
    min-width: 36px;
    text-align: center;
}

.segment.active {
    background: var(--color-bg);
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.segment:active {
    opacity: 0.7;
}

/* ==================== TILE BAR ==================== */
.tile-bar-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 4px 0;
}

.tile-bar-labels {
    display: flex;
    align-items: flex-end;
    gap: 0;
    margin-bottom: 2px;
}

.tile-bar {
    display: flex;
    align-items: stretch;
    gap: 0;
}

.tile-label {
    text-align: center;
    font-size: 14px;
    color: var(--color-secondary);
    transition: opacity 0.3s;
}

.tile {
    aspect-ratio: 1;
    background: var(--tile-bg);
    border: 1px solid var(--tile-border);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    transition: opacity 0.3s, transform 0.1s;
}

.tile:hover:not(.tile-filled) {
    filter: brightness(0.92);
}

.tile:active:not(.tile-filled) {
    transform: scale(0.95);
}

.tile.disabled {
    cursor: default;
}

.tile.disabled:hover {
    filter: none;
}

.tile.disabled:active {
    transform: none;
}

.tile .circle {
    width: 80%;
    height: 80%;
    border-radius: 50%;
    transition: transform 0.15s ease;
}

.tile .circle.just-placed {
    animation: placeCircle 0.2s ease;
}

@keyframes placeCircle {
    0% { transform: scale(0); }
    70% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.tile .thumb {
    position: absolute;
    width: 60%;
    height: 60%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: inherit;
    pointer-events: none;
}

.thumb-icon {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Tile spacing */
.tile-gap-small {
    width: var(--small-gap);
    flex-shrink: 0;
}

.tile-gap-large {
    width: var(--large-gap);
    flex-shrink: 0;
}

/* ==================== PREVIEW CONTAINER ==================== */
.preview-container {
    width: 100%;
    max-width: 700px;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

/* ==================== SETTINGS ==================== */
.settings-content {
    gap: 8px;
}

.settings-group {
    width: 100%;
    max-width: 500px;
    background: var(--color-gray6);
    border-radius: 12px;
    padding: 12px 16px;
}

.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
}

.setting-row + .setting-row {
    border-top: 0.5px solid var(--color-separator);
}

.setting-label {
    font-size: 15px;
    flex: 1;
}

.stepper {
    display: flex;
    background: var(--color-gray6);
    border-radius: 8px;
    border: 1px solid var(--color-separator);
    overflow: hidden;
}

.stepper-btn {
    width: 36px;
    height: 32px;
    border: none;
    background: var(--color-bg);
    font-size: 20px;
    cursor: pointer;
    color: var(--color-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.stepper-btn:first-child {
    border-right: 1px solid var(--color-separator);
}

.stepper-btn:active {
    background: var(--color-gray6);
}

.stepper-btn:disabled {
    color: var(--color-secondary);
    opacity: 0.4;
}

.player-settings {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.player-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.color-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
    transition: transform 0.15s;
    border: 3px solid transparent;
}

.color-circle:hover {
    transform: scale(1.1);
}

.color-circle:active {
    transform: scale(0.95);
}

.player-name-input {
    flex: 1;
    font-size: 15px;
    padding: 8px 12px;
    border: 1px solid var(--color-separator);
    border-radius: 8px;
    background: var(--color-bg);
    color: var(--color-text);
    outline: none;
    -webkit-user-select: text;
    user-select: text;
}

.player-name-input:focus {
    border-color: var(--color-blue);
}

/* ==================== COLOR PICKER ==================== */
.color-picker-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
    z-index: 100;
    align-items: center;
    justify-content: center;
}

.color-picker-overlay.visible {
    display: flex;
}

.color-picker-popup {
    background: var(--color-bg);
    border-radius: 14px;
    padding: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

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

.color-option {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.15s;
    border: 4px solid transparent;
}

.color-option:hover {
    transform: scale(1.15);
}

.color-option:active {
    transform: scale(0.95);
}

.color-option.selected {
    border-color: var(--color-bg);
    box-shadow: 0 0 0 3px var(--color-text);
}

/* ==================== GAME SCREEN ==================== */
.game-content {
    justify-content: flex-start;
    gap: 12px;
}

.task-label {
    font-size: 17px;
    text-align: center;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    white-space: pre-line;
    line-height: 1.4;
    width: 100%;
    max-width: 600px;
}

.player-buttons {
    display: flex;
    gap: 16px;
    width: 100%;
    max-width: 600px;
    justify-content: center;
}

.player-btn {
    flex: 1;
    max-width: 250px;
    padding: 14px 20px;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    color: white;
    transition: opacity 0.3s, transform 0.1s;
    min-height: 50px;
}

.player-btn:active {
    transform: scale(0.97);
}

.player-btn:disabled {
    cursor: default;
}

.player-btn:disabled:active {
    transform: none;
}

.player-btn.faded {
    opacity: 0.2;
}

.player-btn.hidden-text {
    color: transparent;
}

.game-field-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 800px;
    min-height: 60px;
}

.game-actions {
    display: flex;
    gap: 12px;
    padding: 8px 0 12px;
}

.action-btn {
    padding: 10px 24px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    cursor: pointer;
    background: var(--color-blue);
    color: white;
    transition: opacity 0.2s, transform 0.1s;
}

.action-btn:active {
    transform: scale(0.97);
}

.action-btn:hover {
    opacity: 0.85;
}

/* ==================== ARCHIVE ==================== */
.archive-content {
    gap: 12px;
}

.archive-scroll {
    flex: 1;
    width: 100%;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-bottom: 20px;
}

.archive-empty {
    text-align: center;
    color: var(--color-secondary);
    font-size: 17px;
    padding: 40px;
}

.archive-card {
    background: var(--color-gray6);
    border-radius: 12px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    transition: transform 0.2s;
}

.archive-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--color-secondary);
}

.archive-card-header .game-number {
    font-weight: 600;
    color: var(--color-text);
}

.archive-card-players {
    display: flex;
    gap: 8px;
    align-items: center;
    font-size: 14px;
}

.archive-player-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.archive-card-tilebar {
    overflow-x: auto;
    padding: 4px 0;
}

.archive-card-actions {
    display: flex;
    gap: 6px;
    justify-content: flex-end;
    margin-top: 4px;
    flex-wrap: wrap;
}

.archive-action-btn {
    padding: 6px 14px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.archive-action-btn.research {
    background: var(--color-blue);
    color: white;
}

.archive-action-btn.delete {
    background: var(--color-red);
    color: white;
}

.archive-action-btn.export {
    background: var(--color-green);
    color: white;
}

.archive-action-btn:active {
    opacity: 0.7;
}

/* ==================== SORT POPUP ==================== */
.sort-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
    z-index: 100;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 30px;
}

.sort-overlay.visible {
    display: flex;
}

.sort-popup {
    background: var(--color-bg);
    border-radius: 14px;
    padding: 4px;
    min-width: 260px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.sort-option {
    display: block;
    width: 100%;
    padding: 14px 20px;
    border: none;
    background: transparent;
    font-size: 17px;
    color: var(--color-blue);
    cursor: pointer;
    text-align: center;
}

.sort-option + .sort-option {
    border-top: 0.5px solid var(--color-separator);
}

.sort-option:active {
    background: var(--color-gray6);
}

.sort-cancel {
    font-weight: 600;
    color: var(--color-red);
}

/* ==================== RESEARCH SCREEN ==================== */
.research-content {
    gap: 12px;
}

.research-section {
    width: 100%;
    max-width: 700px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.research-labels {
    font-size: 14px;
    color: var(--color-secondary);
    text-align: center;
}

.reference-bar {
    pointer-events: none;
}

.reference-bar .tile {
    background: transparent;
    border-color: transparent;
}

.research-controls {
    width: 100%;
    max-width: 500px;
    background: var(--color-gray6);
    border-radius: 12px;
    padding: 8px 16px;
}

.setting-row.compact {
    padding: 6px 0;
}

.divider {
    width: 100%;
    max-width: 600px;
    border: none;
    border-top: 1px solid var(--color-separator);
    margin: 4px 0;
}

/* ==================== DIALOG ==================== */
.dialog-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 200;
    align-items: center;
    justify-content: center;
}

.dialog-overlay.visible {
    display: flex;
}

.dialog-box {
    background: var(--color-bg);
    border-radius: 14px;
    padding: 20px;
    min-width: 270px;
    max-width: 340px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    text-align: center;
}

.dialog-title {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
}

.dialog-message {
    font-size: 14px;
    color: var(--color-secondary);
    margin-bottom: 16px;
    line-height: 1.4;
}

.dialog-buttons {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-top: 0.5px solid var(--color-separator);
}

.dialog-btn {
    padding: 12px 20px;
    border: none;
    background: transparent;
    font-size: 17px;
    color: var(--color-blue);
    cursor: pointer;
    border-top: 0.5px solid var(--color-separator);
}

.dialog-btn:first-child {
    border-top: none;
}

.dialog-btn:active {
    background: var(--color-gray6);
}

.dialog-btn.destructive {
    color: var(--color-red);
}

.dialog-btn.bold {
    font-weight: 600;
}

.dialog-btn.cancel {
    font-weight: 600;
}

/* ==================== ARCHIVE TILE BAR (smaller) ==================== */
.archive-card-tilebar .tile-bar-container {
    align-items: flex-start;
}

.archive-card-tilebar .tile {
    cursor: default;
}

.archive-card-tilebar .tile:hover {
    filter: none;
}

.archive-card-tilebar .tile:active {
    transform: none;
}

/* ==================== SORT GROUP LABELS ==================== */
.sort-group-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 20px 4px;
    text-align: center;
    border-top: 0.5px solid var(--color-separator);
}

.sort-group-label:first-child {
    border-top: none;
}

/* ==================== INFO OVERLAY ==================== */
#info-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

#info-overlay.visible {
    display: flex;
}

.info-box {
    background: var(--color-bg);
    border-radius: 16px;
    max-width: 440px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.info-header {
    text-align: center;
    padding: 24px 20px 12px;
}

.info-icon {
    margin-bottom: 8px;
}

.info-title {
    font-size: 24px;
    font-weight: 700;
}

.info-subtitle {
    font-size: 14px;
    color: var(--color-secondary);
    margin-top: 2px;
}

.info-content {
    padding: 12px 24px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text);
}

.info-content p {
    margin-bottom: 10px;
}

.info-links {
    margin: 12px 0;
}

.info-links a {
    color: var(--color-blue);
    text-decoration: none;
}

.info-links a:hover {
    text-decoration: underline;
}

.info-license {
    margin-top: 16px;
    padding: 12px;
    background: var(--color-gray6);
    border-radius: 8px;
    font-size: 13px;
}

.info-license p {
    margin-bottom: 6px;
}

.info-license-text {
    font-size: 11px;
    color: var(--color-secondary);
    line-height: 1.5;
}

.info-close-btn {
    display: block;
    width: 100%;
    padding: 14px;
    border: none;
    background: transparent;
    font-size: 17px;
    font-weight: 600;
    color: var(--color-blue);
    cursor: pointer;
    border-top: 0.5px solid var(--color-separator);
}

.info-close-btn:active {
    background: var(--color-gray6);
}

/* ==================== DRAG AND DROP ==================== */
.archive-card.dragging {
    opacity: 0.5;
    transform: scale(0.98);
}

.archive-card.drag-over {
    border-top: 3px solid var(--color-blue);
}

.archive-card .drag-handle {
    cursor: grab;
    color: var(--color-secondary);
    font-size: 18px;
    padding: 0 4px;
    user-select: none;
    -webkit-user-select: none;
}

.archive-card .drag-handle:active {
    cursor: grabbing;
}

/* ==================== PRINT / PDF ==================== */
.print-area {
    display: none;
}

@media print {
    * {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
        color-adjust: exact !important;
    }
    body > *:not(.print-area) {
        display: none !important;
    }
    .print-area {
        display: block !important;
        padding: 0;
        margin: 0;
        color: #000;
        background: #fff;
    }
    .print-header {
        text-align: center;
        margin-bottom: 20px;
        padding-bottom: 10px;
        border-bottom: 1px solid #ccc;
    }
    .print-header h1 {
        font-size: 18px;
        margin-bottom: 4px;
    }
    .print-header .print-date {
        font-size: 12px;
        color: #666;
    }
    .print-game {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 6px;
        page-break-inside: avoid;
    }
    .print-game-number {
        font-size: 12px;
        font-variant-numeric: tabular-nums;
        min-width: 30px;
        text-align: right;
        color: #666;
    }
    .print-tiles {
        display: inline-flex;
        align-items: stretch;
        gap: 0;
        flex-shrink: 0;
    }
    .print-tile {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 18px;
        height: 18px;
        border: 0.5px solid #999;
        position: relative;
        flex-shrink: 0;
    }
    .print-gap-small {
        width: 2px;
        flex-shrink: 0;
    }
    .print-gap-large {
        width: 6px;
        flex-shrink: 0;
    }
    .print-circle {
        display: block;
        width: 14px;
        height: 14px;
        border-radius: 50%;
    }
    .print-thumb {
        font-size: 10px;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        z-index: 1;
    }
    .print-players {
        font-size: 10px;
        color: #666;
        margin-left: 8px;
        white-space: nowrap;
    }
    .print-player-dot {
        display: inline-block;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        vertical-align: middle;
        margin-right: 2px;
    }
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 480px) {
    .nav-title {
        font-size: 15px;
    }
    .nav-btn {
        font-size: 15px;
        padding: 4px 4px;
    }
    .player-btn {
        font-size: 16px;
        padding: 12px 14px;
    }
    .task-label {
        font-size: 15px;
    }
}

@media (min-width: 768px) {
    .archive-scroll {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
        align-content: start;
    }
    .archive-empty {
        grid-column: 1 / -1;
    }
}