:root {
    /* Dyslexia-friendly typography */
    --font-family: Verdana, system-ui, -apple-system, sans-serif;
    --font-size-base: 18px;
    --line-height-base: 1.6;
    --letter-spacing: 0.05em;

    /* High contrast dark mode palette */
    --bg-color: #121212;
    --surface-color: #242424;
    --surface-color-hover: #333333;
    --text-color: #f5f5f5;
    --text-muted: #aaaaaa;

    /* Status Colors (Accessible/Vibrant) */
    --primary-color: #3f51b5; /* Blue */
    --primary-hover: #5c6bc0;
    
    --status-waiting: #ffb74d; /* Orange */
    --status-inbay: #64b5f6; /* Light Blue */
    --status-finished: #81c784; /* Green */
    --danger-color: #ef5350; /* Red */

    /* Layout */
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --border-radius: 12px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    letter-spacing: var(--letter-spacing);
    background-color: var(--bg-color);
    color: var(--text-color);
    padding-bottom: 80px; /* Space for bottom nav */
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

h2 {
    font-size: 1.5rem;
    border-bottom: 2px solid var(--surface-color);
    padding-bottom: var(--spacing-sm);
}

/* Header */
.app-header {
    background-color: var(--surface-color);
    padding: var(--spacing-md);
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.app-header h1 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--status-inbay);
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--surface-color);
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-sm) 0;
    box-shadow: 0 -4px 6px rgba(0,0,0,0.3);
    z-index: 100;
}

.nav-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.9rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    padding: var(--spacing-sm);
    flex: 1;
    transition: color 0.2s;
}

.nav-btn .icon {
    font-size: 1.5rem;
}

.nav-btn.active {
    color: var(--status-inbay);
    font-weight: bold;
}

/* Views */
.app-content {
    padding: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.view {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.view.active-view {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Common UI Elements */
.card {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: bold;
    color: var(--text-color);
}

select, input {
    width: 100%;
    padding: 12px;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 2px solid #555;
    border-radius: var(--border-radius);
    outline: none;
    transition: border-color 0.2s;
}

select:focus, input:focus {
    border-color: var(--status-inbay);
}

select:disabled {
    opacity: 0.5;
}

.btn {
    display: block;
    width: 100%;
    padding: 14px;
    font-size: 1.1rem;
    font-weight: bold;
    font-family: inherit;
    text-align: center;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: transform 0.1s, filter 0.2s;
}

.btn:active {
    transform: scale(0.98);
}

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

.btn-secondary {
    background-color: var(--surface-color-hover);
    color: var(--text-color);
    border: 2px solid #555;
}

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

.mt-2 { margin-top: var(--spacing-md); }
.w-100 { width: 100%; }
.hidden { display: none !important; }

/* Lookup Results */
.results-card {
    background-color: #1e1e1e;
    border: 2px solid var(--status-inbay);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.tire-size-box {
    background-color: var(--surface-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    display: flex;
    flex-direction: column;
}

.tire-size-box.highlight {
    border-left: 6px solid var(--status-waiting);
}

.tire-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.tire-value {
    font-size: 1.8rem;
    color: var(--text-color);
    letter-spacing: 0.1em;
}

/* Job Board */
.board-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.board-header h2 { margin: 0; border: none; }
.board-header .btn { width: auto; padding: 10px 20px; }

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

@media (min-width: 768px) {
    .kanban-board {
        flex-direction: row;
        align-items: flex-start;
    }
    .kanban-column {
        flex: 1;
    }
}

.kanban-column {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    min-height: 200px;
}

.column-header {
    padding: 12px;
    font-weight: bold;
    text-align: center;
    color: #121212;
    font-size: 1.1rem;
}

.status-waiting { background-color: var(--status-waiting); }
.status-inbay { background-color: var(--status-inbay); }
.status-finished { background-color: var(--status-finished); }

.column-content {
    padding: var(--spacing-sm);
    min-height: 150px;
}

.job-card {
    background-color: var(--bg-color);
    border-left: 6px solid var(--primary-color);
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.5);
    transition: transform 0.1s;
}

.job-card:active {
    transform: scale(0.98);
}

.job-service {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 4px;
}

.job-details {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: var(--spacing-md);
}

.modal-content {
    background-color: var(--surface-color);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.help-text {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.modal-actions .btn {
    flex: 1;
}

/* Quick Services */
.quick-services {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.service-btn {
    padding: 16px 8px;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 2px solid #555;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    font-family: inherit;
}

.service-btn.selected {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

#selected-service-display {
    color: var(--status-inbay);
    font-weight: bold;
    margin-bottom: var(--spacing-md);
}

/* Action Sheet Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.move-btn {
    background-color: var(--bg-color);
    border: 2px solid var(--text-muted);
}

/* Library */
.brand-list, .guide-list {
    list-style: none;
}

.brand-list li, .guide-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid #444;
}

.brand-list li:last-child, .guide-list li:last-child {
    border-bottom: none;
}