/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

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

.loading {
    text-align: center;
    padding: 2rem;
    font-size: 1.2rem;
    color: #666;
}

.error-message {
    color: #d32f2f;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.success-message {
    color: #388e3c;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* Header */
header {
    background: linear-gradient(135deg, #1976d2, #1565c0);
    color: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

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

.location-tabs {
    display: flex;
    gap: 0.5rem;
}

.location-tab {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.location-tab:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.location-tab.active {
    background: white;
    color: #1976d2;
    border-color: white;
}

.location-tab.active[data-location="Eckernförde"] {
    color: #d32f2f;
}

.date-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.date-controls label {
    font-weight: 500;
}

.date-controls input {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
}

.date-controls button {
    background: #4caf50;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

.date-controls button:hover {
    background: #45a049;
}

.user-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#userInfo {
    font-weight: 500;
}

#logoutBtn {
    background: #f44336;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

#logoutBtn:hover {
    background: #d32f2f;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

/* Main content */
main {
    padding: 2rem;
    max-width: 100%;
    overflow-x: auto;
}

/* Schedule Grid */
#scheduleGrid {
    display: grid;
    gap: 2rem;
    margin-top: 1rem;
}

.schedule-day {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow: hidden;
}

.day-header {
    background: #e3f2fd;
    padding: 1rem;
    border-bottom: 1px solid #ddd;
}

.day-header h3 {
    color: #1976d2;
    font-size: 1.2rem;
}

.day-content {
    padding: 1rem;
}

.area-section {
    margin-bottom: 2rem;
}

.area-section:last-child {
    margin-bottom: 0;
}

.area-header {
    background: #f8f9fa;
    padding: 0.75rem;
    border-left: 4px solid #1976d2;
    margin-bottom: 1rem;
}

.area-header h4 {
    color: #1976d2;
    font-size: 1.1rem;
}

/* Eckernförde location styling (red theme) */
.area-header[data-location="Eckernförde"] {
    border-left-color: #d32f2f;
}

.area-header[data-location="Eckernförde"] h4 {
    color: #d32f2f;
}

.day-header[data-location="Eckernförde"] {
    background: #ffebee;
}

.day-header[data-location="Eckernförde"] h3 {
    color: #d32f2f;
}

.time-slots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.time-slot {
    border: 1px solid #ddd;
    border-radius: 6px;
    overflow: hidden;
}

.time-slot-header {
    background: #f5f5f5;
    padding: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    text-align: center;
    border-bottom: 1px solid #ddd;
}

.supervision-slots {
    display: flex;
    flex-direction: column;
}

.supervision-slot {
    padding: 0.5rem;
    min-height: 40px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 0.9rem;
}

.supervision-slot:last-child {
    border-bottom: none;
}

.supervision-slot.empty {
    background-color: #ffebee;
    color: #666;
    border: 2px dashed #f44336;
}

.supervision-slot.empty:hover {
    background-color: #ffcdd2;
    border-color: #d32f2f;
}

.supervision-slot.filled {
    background-color: #e8f5e8;
    color: #2e7d32;
    border: 2px solid #4caf50;
    font-weight: 500;
}

.supervision-slot.filled:hover {
    background-color: #c8e6c9;
    border-color: #388e3c;
}

.supervision-slot.updating {
    background-color: #fff3e0;
    border-color: #ff9800;
    opacity: 0.7;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #ddd;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2,
.modal-header h3 {
    color: #1976d2;
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.close-btn:hover {
    background-color: #f5f5f5;
}

.modal-body {
    padding: 1.5rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    outline: none;
    border-color: #1976d2;
    box-shadow: 0 0 0 2px rgba(25, 118, 210, 0.2);
}

.form-group input[type="checkbox"] {
    margin-right: 0.5rem;
}

/* Assignment Info */
.assignment-info {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
}

.assignment-info p {
    margin-bottom: 0.5rem;
}

.assignment-info p:last-child {
    margin-bottom: 0;
}

/* Teacher Search */
.teacher-search {
    margin-bottom: 1.5rem;
}

.teacher-search input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.teacher-results {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid #ddd;
    border-top: none;
    border-radius: 0 0 4px 4px;
    background: white;
}

.teacher-result {
    padding: 0.75rem;
    cursor: pointer;
    border-bottom: 1px solid #eee;
    transition: background-color 0.2s;
}

.teacher-result:last-child {
    border-bottom: none;
}

.teacher-result:hover {
    background-color: #f5f5f5;
}

.teacher-result.selected {
    background-color: #e3f2fd;
    color: #1976d2;
}

.teacher-name {
    font-weight: 500;
}

.teacher-full-name {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.25rem;
}

/* Buttons */
button {
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    border-radius: 4px;
    padding: 0.75rem 1.5rem;
    transition: all 0.2s;
    font-weight: 500;
}

.btn-primary {
    background: #1976d2;
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: #1565c0;
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: #f44336;
    color: white;
}

.btn-danger:hover {
    background: #d32f2f;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* Status Messages */
#statusMessages {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    max-width: 400px;
}

.status-message {
    background: white;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    padding: 1rem;
    margin-bottom: 0.5rem;
    border-left: 4px solid;
    animation: slideIn 0.3s ease-out;
}

.status-message.success {
    border-left-color: #4caf50;
    background-color: #f1f8e9;
}

.status-message.error {
    border-left-color: #f44336;
    background-color: #ffebee;
}

.status-message.info {
    border-left-color: #2196f3;
    background-color: #e3f2fd;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* My Assignments Modal Styles */
#myAssignmentsModal .modal-content {
    max-width: 800px;
}

.assignments-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.assignments-table th,
.assignments-table td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

.assignments-table th {
    background-color: #f2f2f2;
    font-weight: bold;
}

.assignments-table tr:nth-child(even) {
    background-color: #f9f9f9;
}

.assignments-table tr:hover {
    background-color: #f5f5f5;
}

.print-controls {
    text-align: right;
    margin-bottom: 20px;
}

@media print {
    body {
        font-size: 12px;
    }
    
    .assignments-table th,
    .assignments-table td {
        padding: 8px;
    }
    
    .print-controls {
        display: none;
    }
    
    #myAssignmentsModal {
        display: block !important;
        position: static !important;
        background: white !important;
    }
    
    #myAssignmentsModal .modal-content {
        box-shadow: none !important;
        max-width: 100% !important;
    }
}

/* Template View Styles */
.area-template-view {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    overflow: hidden;
}

.area-template-view .area-header {
    background: #f8f9fa;
    padding: 1rem;
    border-left: 4px solid #1976d2;
    margin-bottom: 0;
}

.area-template-view .area-header[data-location="Eckernförde"] {
    border-left-color: #d32f2f;
}

.area-template-view .area-header h3 {
    color: #1976d2;
    font-size: 1.3rem;
    margin: 0 0 0.5rem 0;
}

.area-template-view .area-header[data-location="Eckernförde"] h3 {
    color: #d32f2f;
}

.template-note {
    color: #666;
    font-size: 0.9rem;
    font-style: italic;
    margin: 0;
}

.template-container {
    padding: 1rem;
}

.template-grid {
    display: grid;
    grid-template-columns: 120px repeat(5, 1fr);
    gap: 1px;
    background-color: #ddd;
    border: 1px solid #ddd;
    margin-top: 10px;
}

.template-grid-header {
    display: contents;
}

.day-column-header,
.time-column-header {
    background-color: #f8f9fa;
    padding: 8px;
    font-weight: bold;
    text-align: center;
    border: 1px solid #ddd;
}

.day-column-header {
    font-size: 0.9em;
}

.day-short {
    font-size: 0.8em;
    color: #666;
    font-weight: normal;
}

.template-time-row {
    display: contents;
}

.time-cell-header {
    background-color: #f8f9fa;
    padding: 8px;
    font-weight: bold;
    text-align: center;
    border: 1px solid #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
}

.time-name {
    font-size: 0.9em;
}

.day-cell {
    background-color: white;
    padding: 4px;
    border: 1px solid #ddd;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.template-day-row {
    display: contents;
}

.time-cell {
    background-color: white;
    padding: 4px;
    border: 1px solid #ddd;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.area-week-view .area-header {
    background: #f8f9fa;
    padding: 1rem;
    border-left: 4px solid #1976d2;
    margin-bottom: 0;
}

.area-week-view .area-header[data-location="Eckernförde"] {
    border-left-color: #d32f2f;
}

.area-week-view .area-header h3 {
    color: #1976d2;
    font-size: 1.3rem;
    margin: 0;
}

.area-week-view .area-header[data-location="Eckernförde"] h3 {
    color: #d32f2f;
}

.weeks-container {
    padding: 1rem;
}

.week-section {
    margin-bottom: 2rem;
}

.week-section:last-child {
    margin-bottom: 0;
}

.week-header {
    background: #f5f5f5;
    padding: 0.75rem 1rem;
    border-radius: 6px 6px 0 0;
    border-bottom: 1px solid #ddd;
}

.week-header h4 {
    color: #666;
    font-size: 1rem;
    margin: 0;
}

.week-grid {
    border: 1px solid #ddd;
    border-radius: 0 0 6px 6px;
    overflow: hidden;
}

.week-grid-header {
    display: grid;
    grid-template-columns: 120px repeat(auto-fit, minmax(150px, 1fr));
    background: #f8f9fa;
    border-bottom: 2px solid #ddd;
}

.day-column-header,
.time-column-header {
    padding: 0.75rem;
    font-weight: 600;
    text-align: center;
    border-right: 1px solid #ddd;
    color: #333;
}

.day-column-header {
    background: #e9ecef;
}

.time-column-header:last-child {
    border-right: none;
}

.week-day-row {
    display: grid;
    grid-template-columns: 120px repeat(auto-fit, minmax(150px, 1fr));
    border-bottom: 1px solid #eee;
}

.week-day-row:last-child {
    border-bottom: none;
}

.day-cell {
    padding: 0.75rem;
    background: #f8f9fa;
    border-right: 1px solid #ddd;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.day-name {
    font-weight: 600;
    color: #333;
    font-size: 0.9rem;
}

.day-date {
    font-size: 0.8rem;
    color: #666;
    margin-top: 0.25rem;
}

.time-cell {
    padding: 0.5rem;
    border-right: 1px solid #ddd;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    min-height: 60px;
}

.time-cell:last-child {
    border-right: none;
}

.time-cell .supervision-slot {
    margin: 0;
    min-height: auto;
    padding: 0.4rem;
    font-size: 0.85rem;
    border-radius: 4px;
}

/* Week Grid Container for Horizontal Scrolling */
.week-grid-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: #ccc transparent;
}

.week-grid-container::-webkit-scrollbar {
    height: 6px;
}

.week-grid-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.week-grid-container::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

.week-grid-container::-webkit-scrollbar-thumb:hover {
    background: #999;
}

/* Mobile Day Carousel */
.mobile-day-carousel {
    display: none;
    position: relative;
}

.mobile-day-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #f8f9fa;
    border-bottom: 1px solid #ddd;
}

.mobile-day-nav-btn {
    background: #1976d2;
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background-color 0.2s;
}

.mobile-day-nav-btn:hover {
    background: #1565c0;
}

.mobile-day-nav-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.mobile-day-indicator {
    font-weight: 600;
    color: #333;
    text-align: center;
    flex: 1;
}

.mobile-day-content {
    padding: 1rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .week-grid-header,
    .week-day-row {
        grid-template-columns: 100px repeat(5, minmax(140px, 1fr));
        min-width: 800px;
    }
    
    .day-cell {
        padding: 0.5rem;
    }
    
    .time-cell {
        padding: 0.4rem;
        min-height: 50px;
    }
}

@media (max-width: 768px) {
    header {
        padding: 1rem;
    }
    
    .header-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .date-controls {
        justify-content: center;
    }
    
    .user-controls {
        justify-content: center;
    }
    
    main {
        padding: 1rem;
    }
    
    /* Enable horizontal scrolling for tablets */
    .week-grid-header,
    .week-day-row {
        grid-template-columns: 100px repeat(5, minmax(130px, 1fr));
        min-width: 750px;
    }
    
    .day-cell {
        padding: 0.4rem;
    }
    
    .day-name {
        font-size: 0.85rem;
    }
    
    .day-date {
        font-size: 0.75rem;
    }
    
    .time-cell {
        padding: 0.3rem;
        min-height: 45px;
    }
    
    .time-cell .supervision-slot {
        padding: 0.3rem;
        font-size: 0.8rem;
    }
    
    .time-slots {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .modal-actions button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .date-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .date-controls input,
    .date-controls button {
        width: 100%;
    }
    
    /* Hide regular week grid on mobile */
    .area-week-view .week-grid,
    .area-template-view .template-grid {
        display: none;
    }
    
    /* Show mobile carousel */
    .mobile-day-carousel {
        display: block;
    }
    
    /* Single day view for mobile */
    .mobile-day-grid {
        display: grid;
        grid-template-columns: 100px 1fr;
        gap: 1px;
        background-color: #ddd;
        border: 1px solid #ddd;
    }
    
    .mobile-day-grid .time-column-header {
        background-color: #f8f9fa;
        padding: 0.75rem 0.5rem;
        font-weight: bold;
        text-align: center;
        border: 1px solid #ddd;
        font-size: 0.8rem;
    }
    
    .mobile-day-grid .day-column-header {
        background-color: #e9ecef;
        padding: 0.75rem;
        font-weight: 600;
        text-align: center;
        border: 1px solid #ddd;
        font-size: 0.9rem;
    }
    
    .mobile-day-grid .time-cell {
        background-color: #f8f9fa;
        padding: 0.75rem 0.5rem;
        border: 1px solid #ddd;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.8rem;
        font-weight: 500;
    }
    
    .mobile-day-grid .day-cell {
        background-color: white;
        padding: 0.5rem;
        border: 1px solid #ddd;
        min-height: 60px;
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .mobile-day-grid .supervision-slot {
        margin: 0;
        min-height: auto;
        padding: 0.4rem;
        font-size: 0.8rem;
        border-radius: 4px;
    }
}