/* ============================================
   CHECKPOINT COURIER - STYLES
   ============================================ */

:root {
    /* Colors */
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --text-muted: #666;

    --accent-primary: #e94560;
    --accent-secondary: #0f3460;
    --accent-success: #4ade80;
    --accent-warning: #fbbf24;
    --accent-danger: #ef4444;

    --border-color: #333;
    --card-bg: #1e1e3f;
    --dialog-bg: #252550;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
}

#app {
    height: 100%;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* ============================================
   SCREENS
   ============================================ */

.screen {
    display: none;
    flex-direction: column;
    height: 100%;
    padding: var(--spacing-md);
    animation: fadeIn var(--transition-normal);
}

.screen.active {
    display: flex;
}

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

/* ============================================
   HEADERS
   ============================================ */

.game-header {
    text-align: center;
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.game-header h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--accent-primary);
    text-shadow: 0 0 20px rgba(233, 69, 96, 0.3);
}

.player-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    font-size: 1.1rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.screen-header {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.screen-header h2 {
    flex: 1;
    text-align: center;
    font-size: 1.5rem;
}

.header-stat {
    font-size: 1rem;
}

.btn-back {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.btn-back:hover {
    color: var(--accent-primary);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: #d63850;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--accent-secondary);
    border-color: var(--accent-primary);
}

.btn-tertiary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-tertiary:hover:not(:disabled) {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.btn-danger {
    background: var(--accent-danger);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1.2rem;
}

.btn-action {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    width: 100%;
    text-align: left;
    padding: var(--spacing-md);
}

.btn-action:hover:not(:disabled) {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
}

/* ============================================
   HOME SCREEN
   ============================================ */

.home-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 300px;
    margin: 0 auto;
    width: 100%;
}

.notice {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
}

.notice-warning {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid var(--accent-warning);
    color: var(--accent-warning);
}

/* ============================================
   DELIVERY SELECTION
   ============================================ */

.delivery-content {
    flex: 1;
    overflow-y: auto;
}

.delivery-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.delivery-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.delivery-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.delivery-card.selected {
    border-color: var(--accent-primary);
    background: rgba(233, 69, 96, 0.1);
}

.delivery-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.delivery-name {
    font-size: 1.2rem;
    font-weight: 600;
}

.delivery-reward {
    color: var(--accent-success);
    font-weight: 600;
}

.delivery-details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.delivery-tag {
    background: var(--bg-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.delivery-tag.warning {
    background: rgba(251, 191, 36, 0.2);
    color: var(--accent-warning);
}

.delivery-tag.danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-danger);
}

.delivery-requirements {
    font-size: 0.85rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-sm);
}

.delivery-actions {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: center;
}

/* ============================================
   PERMITS
   ============================================ */

.permits-content {
    flex: 1;
    overflow-y: auto;
}

.permits-content section {
    margin-bottom: var(--spacing-xl);
}

.permits-content h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.permit-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.permit-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.permit-card.owned {
    border-color: var(--accent-success);
}

.permit-card.locked {
    opacity: 0.6;
}

.permit-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.permit-name {
    font-weight: 600;
}

.permit-cost {
    color: var(--accent-warning);
}

.permit-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.permit-validity {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.permit-validity.low {
    color: var(--accent-warning);
}

.permit-validity.expired {
    color: var(--accent-danger);
}

.permit-prereq {
    font-size: 0.85rem;
    color: var(--accent-warning);
    margin-top: var(--spacing-sm);
}

.empty-state {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: var(--spacing-lg);
}

/* ============================================
   UPGRADES
   ============================================ */

.upgrades-content {
    flex: 1;
    overflow-y: auto;
}

.upgrades-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.upgrade-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
}

.upgrade-card.owned {
    border-color: var(--accent-success);
}

.upgrade-card.locked {
    opacity: 0.6;
}

.upgrade-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.upgrade-name {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.upgrade-tier {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.upgrade-effect {
    font-size: 0.85rem;
    color: var(--accent-success);
    margin-bottom: var(--spacing-md);
}

.upgrade-cost {
    font-weight: 600;
    color: var(--accent-warning);
}

.upgrade-card button {
    margin-top: var(--spacing-sm);
    width: 100%;
}

/* ============================================
   SETTINGS
   ============================================ */

.settings-content {
    flex: 1;
    overflow-y: auto;
}

.settings-section {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.settings-section h3 {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.info-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.info-text code {
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: monospace;
}

.setting-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.settings-section .btn {
    width: 100%;
    margin-top: var(--spacing-sm);
}

.version {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Diagnostics Output */
.diagnostics-output {
    margin-top: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    overflow-x: auto;
}

.diagnostics-output pre {
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 0.8rem;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
    margin: 0;
    color: var(--text-secondary);
}

.diagnostics-output .success {
    color: var(--accent-success);
}

.diagnostics-output .error {
    color: var(--accent-danger);
}

.diagnostics-output .warning {
    color: var(--accent-warning);
}

/* Toggle Switch */
input[type="checkbox"] {
    appearance: none;
    width: 50px;
    height: 26px;
    background: var(--bg-secondary);
    border-radius: 13px;
    position: relative;
    cursor: pointer;
    transition: background var(--transition-fast);
}

input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--text-primary);
    top: 2px;
    left: 2px;
    transition: transform var(--transition-fast);
}

input[type="checkbox"]:checked {
    background: var(--accent-success);
}

input[type="checkbox"]:checked::before {
    transform: translateX(24px);
}

/* ============================================
   GAME SCREEN
   ============================================ */

#game-screen {
    padding: 0;
}

.game-hud {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.8);
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
}

.hud-stat {
    font-size: 0.9rem;
}

.hud-left, .hud-right {
    display: flex;
    gap: var(--spacing-md);
}

.hud-center {
    font-weight: 600;
}

#game-canvas {
    flex: 1;
    width: 100%;
    background: #2d5a27;
}

.game-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.8);
}

.controls-row {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

.control-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    min-width: 70px;
}

.control-btn.accel-btn {
    flex: 2;
    min-width: 120px;
}

.control-btn.brake-btn {
    flex: 1;
    min-width: 150px;
}

.control-btn.lane-btn {
    flex: 1;
    font-size: 1.4rem;
    padding: var(--spacing-md);
}

.control-btn:active {
    background: var(--accent-primary);
    transform: scale(0.95);
}

/* Exit game button */
.exit-game-btn {
    position: absolute;
    top: 60px;
    left: 10px;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
}

.exit-game-btn:active {
    background: var(--danger);
}

/* ============================================
   DIALOGS
   ============================================ */

.dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: var(--spacing-md);
    animation: fadeIn var(--transition-fast);
}

.dialog {
    background: var(--dialog-bg);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 450px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp var(--transition-normal);
}

.dialog-large {
    max-width: 550px;
}

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

.dialog-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dialog-header h3 {
    font-size: 1.3rem;
}

.badge {
    font-size: 0.75rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.dialog-body {
    padding: var(--spacing-lg);
}

.dialogue-text {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-primary);
}

.situation-info {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
    font-size: 0.9rem;
}

.info-row span:first-child {
    color: var(--text-secondary);
}

.dialog-actions {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

.negotiation-result {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--card-bg);
    border-radius: var(--radius-md);
    text-align: center;
}

#result-text {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

/* Delivery Summary */
.delivery-summary {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    font-size: 1rem;
}

.summary-row.total {
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-md);
    font-weight: 600;
    font-size: 1.2rem;
}

.summary-row span:last-child {
    font-weight: 600;
}

/* Tutorial */
.tutorial-content {
    line-height: 1.7;
}

.tutorial-content h4 {
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    color: var(--accent-primary);
}

.tutorial-content ul {
    list-style: none;
    padding-left: 0;
}

.tutorial-content li {
    padding: var(--spacing-sm) 0;
}

/* Permit Application Steps */
.permit-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.permit-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--card-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.permit-step.completed {
    border-color: var(--accent-success);
    opacity: 0.7;
}

.permit-step.current {
    border-color: var(--accent-primary);
    background: rgba(233, 69, 96, 0.1);
}

.step-number {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.permit-step.completed .step-number {
    background: var(--accent-success);
}

.permit-step.current .step-number {
    background: var(--accent-primary);
}

.step-content {
    flex: 1;
}

.step-name {
    font-weight: 600;
}

.step-description {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.permit-progress {
    margin-top: var(--spacing-lg);
}

.progress-bar {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: var(--accent-primary);
    transition: width var(--transition-normal);
}

#permit-progress-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
    display: block;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 400px) {
    .player-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .upgrades-grid {
        grid-template-columns: 1fr;
    }

    .game-controls {
        flex-direction: column;
    }
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}