:root {
    --primary: #e63946;
    --primary-dark: #c1121f;
    --secondary: #1d3557;
    --light: #f1faee;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-500: #adb5bd;
    --gray-700: #495057;
    --gray-900: #212529;
    --success: #2a9d8f;
    --warning: #e9c46a;
    --danger: #e63946;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--gray-100);
    color: var(--gray-900);
    min-height: 100vh;
    line-height: 1.5;
}

/* Container */
.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

.container-wide {
    max-width: 900px;
}

/* Header */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 15px 20px;
    margin-bottom: 30px;
}

.header-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.logo span {
    color: var(--secondary);
}

.nav {
    display: flex;
    gap: 15px;
    align-items: center;
}

.nav a {
    color: var(--gray-700);
    text-decoration: none;
    font-size: 0.9rem;
}

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

.user-info {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    padding: 30px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--secondary);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--gray-700);
}

.form-input,
.form-select {
    width: 100%;
    padding: 12px 14px;
    font-size: 1rem;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.1);
}

.form-input::placeholder {
    color: var(--gray-500);
}

.form-input-small {
    width: 120px;
}

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    text-decoration: none;
    text-align: center;
}

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

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

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

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

.btn-block {
    display: block;
    width: 100%;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.85rem;
}

/* Results */
.result {
    background: var(--gray-100);
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
}

.result-title {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-bottom: 10px;
}

.result-total {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 15px;
}

.result-breakdown {
    list-style: none;
}

.result-breakdown li {
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.9rem;
    color: var(--gray-700);
}

.result-breakdown li:last-child {
    border-bottom: none;
    font-weight: 600;
    color: var(--secondary);
}

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

/* Loading */
.loading {
    text-align: center;
    padding: 20px;
    color: var(--gray-500);
}

.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Error */
.error {
    background: #fee2e2;
    color: #991b1b;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

/* Success */
.success {
    background: #d1fae5;
    color: #065f46;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

/* Login page specific */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 400px;
}

.login-logo {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--primary);
}

.login-logo span {
    color: var(--secondary);
}

/* Settings page */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.settings-section {
    margin-bottom: 30px;
}

.settings-section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--gray-200);
}

/* Users table */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    text-align: left;
    padding: 12px;
    border-bottom: 1px solid var(--gray-200);
}

.table th {
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.85rem;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 0.75rem;
    border-radius: 4px;
    background: var(--gray-200);
    color: var(--gray-700);
}

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

/* Responsive */
@media (max-width: 600px) {
    .container {
        padding: 15px;
    }

    .card {
        padding: 20px;
    }

    .header-content {
        flex-direction: column;
        gap: 10px;
    }

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

/* Autocomplete dropdown */
.autocomplete-wrapper {
    position: relative;
}

.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-top: none;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    z-index: 100;
    max-height: 200px;
    overflow-y: auto;
}

.autocomplete-item {
    padding: 10px 14px;
    cursor: pointer;
    font-size: 0.9rem;
}

.autocomplete-item:hover {
    background: var(--gray-100);
}