/* Planner Specific Styles */

.planner-container {
    max-width: 100%;
    width: 100%;
    padding: var(--spacing-lg);
}

/* Navigation */
.main-nav {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    justify-content: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--card-background);
    border: 2px solid var(--dark-border);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-normal);
}

.nav-link:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-white);
    transform: translateY(-2px);
}

.nav-link.active {
    background: var(--primary-gradient);
    border-color: var(--kit-green);
    color: var(--text-white);
}

/* Planner Layout - 3 Column */
.planner-layout {
    display: grid;
    grid-template-columns: 300px 1fr 320px;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    height: calc(100vh - 250px);
}

/* Left Sidebar: Course List */
.course-sidebar {
    background: var(--card-gradient);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--dark-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    background: var(--header-gradient);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--dark-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-header h2 {
    font-size: var(--font-size-lg);
    color: var(--text-white);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
}

.refresh-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-white);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.refresh-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(180deg);
}

.sidebar-filters {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--dark-border);
    background: var(--background);
}

.search-box {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.search-box i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

.search-box input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 40px;
    background: var(--card-background);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.filter-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--card-background);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.filter-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-white);
}

.filter-btn.active {
    background: var(--primary-gradient);
    border-color: var(--kit-green);
    color: var(--text-white);
}

.semester-filter {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.semester-filter label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-semibold);
}

.semester-filter select {
    padding: var(--spacing-sm);
    background: var(--card-background);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.course-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    background: var(--background);
}

.course-item {
    background: var(--card-background);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    cursor: grab;
    transition: all var(--transition-normal);
}

.course-item.custom-course {
    border-color: var(--kit-orange);
    background: linear-gradient(135deg, rgba(227, 114, 34, 0.05) 0%, var(--card-background) 100%);
}

.course-item:hover {
    background: var(--card-gradient);
    border-color: var(--kit-green);
    transform: translateX(4px);
}

.course-item:active {
    cursor: grabbing;
}

.course-item.dragging {
    opacity: 0.4;
    cursor: grabbing;
    transform: scale(0.95);
}

.custom-badge {
    display: inline-block;
    background: var(--kit-orange);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-right: 4px;
}

.course-item-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-xs);
}

.course-item-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    line-height: 1.3;
    flex: 1;
}

.course-item-ects {
    background: var(--kit-green);
    color: var(--text-white);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    margin-left: var(--spacing-sm);
}

.course-item-semester {
    font-size: var(--font-size-xs);
    color: var(--text-light);
    margin-top: var(--spacing-xs);
}

/* Center: Semester Grid */
.semester-grid {
    background: var(--card-gradient);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--dark-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.semester-controls {
    background: var(--header-gradient);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--dark-border);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.controls-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.semester-controls h2 {
    font-size: var(--font-size-lg);
    color: var(--text-white);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
}

.fos-selection {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.fos-selection label {
    color: var(--text-white);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
}

.fos-selection select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    color: var(--text-white);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 250px;
}

.fos-selection select:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.fos-selection select:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--kit-green);
}

.fos-selection select option {
    background: var(--card-background);
    color: var(--text-primary);
}

.control-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.control-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    color: var(--text-white);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.control-btn.secondary {
    background: rgba(220, 53, 69, 0.2);
    border-color: rgba(220, 53, 69, 0.3);
}

.control-btn.secondary:hover {
    background: rgba(220, 53, 69, 0.3);
}

.semesters-container {
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    padding: var(--spacing-lg);
    background: var(--background);
    display: flex;
    gap: var(--spacing-lg);
}

.semester-column {
    min-width: 280px;
    background: var(--card-background);
    border: 2px solid var(--dark-border);
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    max-height: 100%;
}

.semester-header {
    background: var(--primary-gradient);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.semester-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-white);
}

.semester-ects {
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--text-white);
}

.semester-actions {
    display: flex;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-sm);
}

.semester-action-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-white);
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: var(--font-size-xs);
}

.semester-action-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.semester-courses {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    min-height: 200px;
    transition: all var(--transition-normal);
}

.semester-courses.drag-over {
    background: rgba(0, 150, 130, 0.1);
    outline: 2px dashed var(--kit-green);
    outline-offset: -4px;
}

.semester-courses.empty {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-style: italic;
    text-align: center;
}

.empty-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xl);
    opacity: 0.6;
}

.empty-message i {
    font-size: var(--font-size-xl);
}

.semester-course-card {
    background: var(--card-gradient);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    cursor: grab;
    transition: all var(--transition-normal);
    position: relative;
}

.semester-course-card.custom-course {
    border-color: var(--kit-orange);
    background: linear-gradient(135deg, rgba(227, 114, 34, 0.05) 0%, var(--card-gradient));
}

.semester-course-card:hover {
    border-color: var(--kit-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 150, 130, 0.2);
}

.semester-course-card:hover .remove-course-btn {
    opacity: 1;
}

.semester-course-card:hover .course-category-badge {
    opacity: 1;
}

.semester-course-card.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.course-category-badge {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(0, 150, 130, 0.9);
    color: white;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 10px;
    font-weight: bold;
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
    z-index: 5;
    white-space: nowrap;
}

.remove-course-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(220, 53, 69, 0.8);
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    opacity: 0;
    color: white;
    font-size: var(--font-size-xs);
}

.remove-course-btn:hover {
    background: rgba(220, 53, 69, 1);
    transform: scale(1.1);
}

/* Right Sidebar: Progress */
.progress-sidebar {
    background: var(--card-gradient);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--dark-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.progress-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    background: var(--background);
}

.total-ects {
    background: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--dark-border);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.total-ects h3 {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.ects-display {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--kit-green);
    margin-bottom: var(--spacing-md);
}

.current-ects {
    color: var(--kit-green);
}

.ects-separator {
    color: var(--text-light);
    margin: 0 var(--spacing-xs);
}

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

.progress-bar {
    width: 100%;
    height: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--dark-border);
}

.progress-fill {
    height: 100%;
    background: var(--secondary-gradient);
    transition: width var(--transition-normal);
    border-radius: 6px;
}

.category-progress {
    background: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--dark-border);
}

.category-progress h3 {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.category-summary {
    background: rgba(0, 150, 130, 0.1);
    border: 1px solid rgba(0, 150, 130, 0.3);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.fos-warning {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: #ffc107;
    font-size: var(--font-size-sm);
}

.fos-warning i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.summary-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--kit-green);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
}

.summary-item i {
    font-size: var(--font-size-lg);
}

.info-text {
    color: var(--text-light);
    font-style: italic;
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.category-item {
    background: var(--background);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-normal);
}

.category-item.clickable {
    cursor: pointer;
}

.category-item.clickable:hover {
    background: var(--card-background);
    border-color: var(--kit-green);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0, 150, 130, 0.2);
}

.category-item:last-child {
    margin-bottom: 0;
}

.category-item.complete {
    border-color: #28a745;
    background: rgba(40, 167, 69, 0.05);
}

.category-item.in-progress {
    border-color: #ffc107;
    background: rgba(255, 193, 7, 0.05);
}

.category-item.not-started {
    border-color: var(--dark-border);
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.category-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.category-label i {
    color: var(--kit-blue);
    width: 16px;
    text-align: center;
}

.category-values {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-weight: var(--font-weight-bold);
}

.status-icon {
    font-size: var(--font-size-sm);
    margin-right: 4px;
}

.complete-icon {
    color: #28a745;
}

.progress-icon {
    color: #ffc107;
}

.not-started-icon {
    color: var(--text-light);
    font-size: 8px;
}

.current-value {
    font-size: var(--font-size-lg);
    color: var(--kit-green);
}

.separator {
    color: var(--text-light);
    font-size: var(--font-size-base);
}

.required-value {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.unit {
    font-size: var(--font-size-xs);
    color: var(--text-light);
    font-weight: var(--font-weight-normal);
}

.category-progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--dark-border);
}

.category-progress-fill {
    height: 100%;
    transition: width 0.5s ease, background 0.3s ease;
    border-radius: 4px;
}

.category-note {
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-style: italic;
}

.category-note i {
    color: var(--kit-blue);
}

.click-hint {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--kit-green);
    display: none;
    align-items: center;
    gap: var(--spacing-xs);
    font-style: italic;
}

.category-item.clickable:hover .click-hint {
    display: flex;
}

.planner-actions {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--dark-border);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    background: var(--background);
}

.action-btn {
    width: 100%;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

.action-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 150, 130, 0.3);
}

/* Loading & Empty States */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--dark-border);
    border-top-color: var(--kit-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

/* Category Details Modal */
.category-details-modal {
    max-width: 600px;
}

.category-details-summary {
    background: var(--card-background);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-base);
    color: var(--kit-green);
}

.category-courses-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.category-course-item {
    background: var(--card-background);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.category-course-item:hover {
    border-color: var(--kit-green);
    transform: translateX(4px);
}

.category-course-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.category-course-name {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    flex: 1;
}

.category-course-meta {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.category-course-ects {
    background: var(--kit-green);
    color: white;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: var(--font-size-xs);
    font-weight: bold;
}

.category-course-semester {
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

.empty-category-message {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--text-light);
}

.empty-category-message i {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
}

/* Responsive */
@media (max-width: 1400px) {
    .planner-layout {
        grid-template-columns: 260px 1fr 280px;
    }
}

@media (max-width: 1200px) {
    .planner-layout {
        grid-template-columns: 1fr;
        height: auto;
    }

    .course-sidebar,
    .progress-sidebar {
        max-height: 400px;
    }

    .semester-grid {
        min-height: 600px;
    }
}