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

:root {
    --bg: #f5f5f5;
    --fg: #1a1a1a;
    --primary: #d32f2f;
    --primary-dark: #b71c1c;
    --card: #fff;
    --border: #e0e0e0;
    --muted: #666;
    --warning: #ff9800;
    --radius: 8px;
}

body {
    font-family: 'SF Mono', Menlo, Monaco, Consolas, monospace;
    background: var(--bg);
    color: var(--fg);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
}

@media (max-width: 480px) {
    body { font-size: 12px; }
}

@media (max-width: 480px) {
    body { font-size: 14px; }
}

/* Navigation */
nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--primary);
    color: white;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav .logo {
    font-weight: bold;
    font-size: 1.25rem;
    color: white;
    text-decoration: none;
}

nav .nav-links {
    display: flex;
    gap: 0.5rem;
    flex: 1;
}

nav .nav-links a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
}

nav .nav-links a:hover {
    background: rgba(255,255,255,0.1);
}

.logout-form {
    margin: 0;
}

.btn-link {
    background: none;
    border: none;
    color: rgba(255,255,255,0.9);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0.5rem;
}

/* Main content */
main {
    padding: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Quick add */
.quick-add {
    background: var(--card);
    padding: 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.quick-add-form {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.quick-add-form select {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--card);
    min-width: 0;
}

.quick-add-form button {
    padding: 0.75rem 1.5rem;
    white-space: nowrap;
}

@media (max-width: 480px) {
    .quick-add-form {
        flex-wrap: wrap;
    }

    .quick-add-form select {
        flex: 1 1 calc(50% - 0.25rem);
    }

    .quick-add-form button {
        flex: 1 1 100%;
    }
}

/* Auth pages */
.auth-container {
    max-width: 400px;
    margin: 4rem auto;
    text-align: center;
}

.auth-container h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.auth-container .subtitle {
    color: var(--muted);
    margin-bottom: 2rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.auth-form input {
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
}

.auth-form button {
    padding: 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    cursor: pointer;
}

.auth-form button:hover {
    background: var(--primary-dark);
}

.email-sent {
    font-weight: bold;
    font-size: 1.1rem;
    margin: 1rem 0;
}

.hint {
    color: var(--muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* Page header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 {
    font-size: 1.5rem;
}

/* Buttons */
.btn-primary {
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    padding: 0.5rem 1rem;
    background: var(--card);
    color: var(--fg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    text-decoration: none;
    font-size: 0.9rem;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    font-size: 1rem;
    opacity: 0.6;
}

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

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

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: var(--card);
    padding: 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--muted);
}

.stat-value {
    font-size: 1.25rem;
    font-weight: bold;
}

/* Sections */
.section {
    background: var(--card);
    padding: 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.section h2 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--muted);
}

/* Tables */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.7rem;
}

th, td {
    padding: 0.75rem 0.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    font-weight: 500;
    color: var(--muted);
    font-size: 0.8rem;
}

.actions {
    text-align: right;
    white-space: nowrap;
}

/* Filters */
.filters {
    display: flex;
    gap: 0.5rem;
}

.filter-form {
    display: flex;
    gap: 0.5rem;
}

.filter-form select {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card);
    font-size: 0.9rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    align-items: center;
    justify-content: center;
    padding: 1rem;
    z-index: 200;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card);
    padding: 1.5rem;
    border-radius: var(--radius);
    width: 100%;
    max-width: 400px;
}

.modal-content h2 {
    margin-bottom: 1rem;
}

.modal-content form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.modal-content label {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.9rem;
    color: var(--muted);
}

.modal-content input,
.modal-content select {
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--card);
}

.modal-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
    margin-top: 0.5rem;
}

.route-display {
    text-align: center;
    font-size: 1.1rem;
    padding: 0.5rem;
    background: var(--bg);
    border-radius: var(--radius);
}

/* Messages */
.error {
    background: #ffebee;
    color: var(--primary);
    padding: 0.75rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.empty {
    text-align: center;
    color: var(--muted);
    padding: 2rem;
}

.empty a {
    color: var(--primary);
}

.warning {
    color: var(--warning);
    font-weight: bold;
}

/* Mobile adjustments */
@media (max-width: 480px) {
    nav .nav-links a {
        padding: 0.5rem;
        font-size: 0.8rem;
    }
    
    .page-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filters {
        width: 100%;
    }
    
    .filter-form {
        flex: 1;
    }
    
    .filter-form select {
        flex: 1;
    }
}