/* School Bell System - Main Stylesheet */

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --background: #f8fafc;
    --card-background: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

.navbar {
    background-color: var(--card-background);
    border-bottom: 2px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-menu a.logout {
    color: var(--danger-color);
}

.container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.card {
    background-color: var(--card-background);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.card-primary {
    border-left: 4px solid var(--primary-color);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h2 {
    color: var(--text-primary);
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s;
    background-color: var(--secondary-color);
    color: white;
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-small {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
}

.btn-block {
    width: 100%;
}

.button-group {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="time"],
.form-group input[type="date"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

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

.table th {
    background-color: var(--background);
    font-weight: 600;
    color: var(--text-primary);
}

.table tr:hover {
    background-color: var(--background);
}

.error-row {
    background-color: #fee;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 500;
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-error {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-info {
    background-color: #cffafe;
    color: #164e63;
}

.badge-primary {
    background-color: #dbeafe;
    color: #1e40af;
}

.badge-secondary {
    background-color: #f1f5f9;
    color: #475569;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background-color: #cffafe;
    color: #164e63;
    border-left: 4px solid var(--info-color);
}

/* Status Messages */
.status-message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 6px;
}

.status-message.success {
    background-color: #d1fae5;
    color: #065f46;
}

.status-message.error {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.next-bell-time {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.bell-times-list {
    list-style: none;
}

.bell-times-list li {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
}

.bell-times-list .time {
    font-weight: bold;
    color: var(--primary-color);
}

.status-list {
    list-style: none;
}

.status-list li {
    padding: 0.5rem 0;
    display: flex;
    justify-content: space-between;
}

.status-indicator {
    font-weight: 500;
}

.status-indicator.status-ok {
    color: var(--success-color);
}

.status-indicator.status-error {
    color: var(--danger-color);
}

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-box {
    background-color: var(--card-background);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

/* Schedules */
.schedule-card {
    margin-bottom: 1rem;
}

.schedule-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.schedule-actions {
    display: flex;
    gap: 0.5rem;
}

.schedule-stats {
    margin-top: 1rem;
    display: flex;
    gap: 0.5rem;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: var(--card-background);
    margin: 5% auto;
    padding: 2rem;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    position: relative;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    color: var(--text-secondary);
}

.close:hover {
    color: var(--text-primary);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.page-info {
    color: var(--text-secondary);
}

/* Calendar */
.calendar-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.legend {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background-color: var(--card-background);
    border-radius: 6px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

.legend-color.weekend {
    background-color: #f1f5f9;
}

.legend-color.holiday {
    background-color: #fef3c7;
}

.legend-color.assigned {
    background-color: #dbeafe;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.info-item {
    padding: 0.75rem;
    background-color: var(--background);
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
}

.info-item .label {
    font-weight: 500;
    color: var(--text-secondary);
}

.info-item .value {
    font-weight: 600;
    color: var(--text-primary);
}

.instructions {
    color: var(--text-secondary);
}

.instructions h4 {
    margin: 1rem 0 0.5rem;
    color: var(--text-primary);
}

.instructions pre {
    background-color: var(--background);
    padding: 0.75rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 0.5rem 0;
}

.no-data {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        padding: 1rem;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        margin-top: 1rem;
    }

    .container {
        padding: 0 1rem;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

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