/* ===== CALENDAR SPECIFIC STYLES ===== */

/* Calendar Container */
.calendar-container {
    padding: 24px;
    height: calc(100vh - var(--topbar-height));
    display: flex;
    flex-direction: column;
}

/* Calendar Header */
.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding: 0 4px;
}

.calendar-navigation {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-btn {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.current-month-year h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    min-width: 200px;
    text-align: center;
}

.calendar-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.view-selector {
    display: flex;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.view-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 8px 16px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.view-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

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

.new-event-btn {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.new-event-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Calendar Layout */
.calendar-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
    flex: 1;
    overflow: hidden;
}

/* Calendar Sidebar */
.calendar-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
    height: 100%;
    overflow-y: auto;
}

/* Mini Calendar */
.mini-calendar {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.mini-calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.mini-nav-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.mini-nav-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.mini-month {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.mini-calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
}

.mini-day-header {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 8px 4px;
}

.mini-day {
    text-align: center;
    padding: 6px 4px;
    font-size: 0.8rem;
    color: var(--text-primary);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.mini-day:hover {
    background: var(--hover-bg);
}

.mini-day.prev-month,
.mini-day.next-month {
    color: var(--text-muted);
}

.mini-day.today {
    background: var(--accent-primary);
    color: white;
    font-weight: 600;
}

/* Calendar Filters */
.calendar-filters {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.calendar-filters h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.filter-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.filter-item {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: background 0.2s ease;
}

.filter-item:hover {
    background: var(--hover-bg);
}

.filter-item input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    position: relative;
    transition: all 0.2s ease;
}

.filter-item input[type="checkbox"]:checked + .checkbox-custom {
    border-color: currentColor;
}

.filter-item input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 10px;
    color: currentColor;
}

.checkbox-custom.javascript { color: #f7df1e; }
.checkbox-custom.python { color: #3776ab; }
.checkbox-custom.react { color: #61dafb; }
.checkbox-custom.assignments { color: #ff6b6b; }
.checkbox-custom.personal { color: #8b5cf6; }

.filter-item span:last-child {
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* Upcoming Events */
.upcoming-events {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.upcoming-events h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.event-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.upcoming-event {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.upcoming-event:hover {
    background: var(--hover-bg);
}

.upcoming-event .event-time {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-primary);
    min-width: 60px;
}

.upcoming-event .event-details {
    flex: 1;
}

.upcoming-event .event-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.upcoming-event .event-instructor {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.event-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.event-indicator.javascript { background: #f7df1e; }
.event-indicator.python { background: #3776ab; }
.event-indicator.react { background: #61dafb; }

/* Calendar Main View */
.calendar-main {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    height: 100%;
}

.calendar-view {
    display: none;
    height: 100%;
    flex-direction: column;
}

.calendar-view.active {
    display: flex;
}

/* Week View */
.week-view {
    height: 100%;
}

.week-header {
    display: grid;
    grid-template-columns: 80px repeat(7, 1fr);
    border-bottom: 1px solid var(--border-color);
    background: var(--secondary-bg);
}

.time-column-header {
    padding: 16px 8px;
    border-right: 1px solid var(--border-color);
}

.day-header {
    padding: 16px 8px;
    text-align: center;
    border-right: 1px solid var(--border-color);
    transition: background 0.2s ease;
}

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

.day-header:hover {
    background: var(--hover-bg);
}

.day-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.day-number {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.day-number.today {
    background: var(--accent-primary);
    color: white;
}

.week-body {
    display: grid;
    grid-template-columns: 80px 1fr;
    height: calc(100% - 65px);
    overflow-y: auto;
}

.time-column {
    border-right: 1px solid var(--border-color);
    background: var(--secondary-bg);
}

.time-slot {
    height: 60px;
    padding: 8px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    position: relative;
}

.day-column {
    border-right: 1px solid var(--border-color);
    position: relative;
}

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

.day-column.today-column {
    background: rgba(98, 100, 167, 0.02);
}

.hour-slot {
    height: 60px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    cursor: pointer;
    transition: background 0.2s ease;
}

.hour-slot:hover {
    background: var(--hover-bg);
}

/* Event Blocks */
.event-block {
    position: absolute;
    left: 2px;
    right: 2px;
    top: 2px;
    border-radius: 6px;
    padding: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 1;
    box-shadow: var(--shadow-sm);
}

.event-block:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    z-index: 2;
}

.event-block[data-duration="1"] {
    height: calc(60px - 4px);
}

.event-block[data-duration="1.5"] {
    height: calc(90px - 4px);
}

.event-block[data-duration="2"] {
    height: calc(120px - 4px);
}

.event-block.javascript {
    background: linear-gradient(135deg, #f7df1e, #ffd700);
    color: #1a1a1a;
}

.event-block.python {
    background: linear-gradient(135deg, #3776ab, #4b8bbe);
    color: white;
}

.event-block.react {
    background: linear-gradient(135deg, #61dafb, #21d4fd);
    color: #1a1a1a;
}

.event-block.assignments {
    background: linear-gradient(135deg, #ff6b6b, #ff5252);
    color: white;
}

.event-block.personal {
    background: linear-gradient(135deg, #8b5cf6, #a855f7);
    color: white;
}

.event-content {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.event-title {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 2px;
    line-height: 1.2;
}

.event-time {
    font-size: 0.75rem;
    opacity: 0.9;
    margin-bottom: 2px;
}

.event-instructor {
    font-size: 0.7rem;
    opacity: 0.8;
    margin-bottom: 4px;
}

.event-actions {
    margin-top: auto;
}

.join-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: inherit;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.7rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

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

.join-btn.disabled {
    background: rgba(0, 0, 0, 0.2);
    border-color: rgba(0, 0, 0, 0.3);
    cursor: not-allowed;
}

/* Event Details Modal */
.event-details-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.event-detail-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.event-detail-item i {
    color: var(--accent-primary);
    width: 20px;
    margin-top: 2px;
}

.event-detail-item div {
    flex: 1;
}

.event-detail-item strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 4px;
}

.event-detail-item span {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .calendar-layout {
        grid-template-columns: 240px 1fr;
    }
    
    .current-month-year h2 {
        font-size: 1.5rem;
        min-width: 180px;
    }
}

@media (max-width: 1024px) {
    .calendar-layout {
        grid-template-columns: 1fr;
    }
    
    .calendar-sidebar {
        display: none;
    }
    
    .calendar-header {
        flex-direction: column;
        gap: 16px;
        align-items: stretch;
    }
    
    .calendar-navigation {
        justify-content: center;
    }
    
    .calendar-controls {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .calendar-container {
        padding: 16px;
    }
    
    .calendar-header {
        margin-bottom: 16px;
    }
    
    .calendar-navigation {
        gap: 12px;
    }
    
    .current-month-year h2 {
        font-size: 1.3rem;
        min-width: 150px;
    }
    
    .calendar-controls {
        gap: 12px;
        flex-wrap: wrap;
    }
    
    .new-event-btn {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
    
    .week-header {
        grid-template-columns: 60px repeat(7, 1fr);
    }
    
    .week-body {
        grid-template-columns: 60px 1fr;
    }
    
    .time-slot {
        padding: 4px;
        font-size: 0.7rem;
        height: 50px;
    }
    
    .hour-slot {
        height: 50px;
    }
    
    .day-header {
        padding: 8px 4px;
    }
    
    .day-name {
        font-size: 0.7rem;
    }
    
    .day-number {
        font-size: 1rem;
        width: 24px;
        height: 24px;
    }
    
    .event-block {
        padding: 4px;
    }
    
    .event-title {
        font-size: 0.7rem;
    }
    
    .event-time {
        font-size: 0.65rem;
    }
    
    .event-instructor {
        font-size: 0.6rem;
    }
    
    .join-btn {
        font-size: 0.6rem;
        padding: 2px 6px;
    }
}

@media (max-width: 480px) {
    .view-selector {
        width: 100%;
    }
    
    .view-btn {
        flex: 1;
        text-align: center;
    }
    
    .calendar-navigation {
        gap: 8px;
    }
    
    .current-month-year h2 {
        font-size: 1.1rem;
        min-width: 120px;
    }
    
    .week-header {
        grid-template-columns: 50px repeat(7, 1fr);
    }
    
    .week-body {
        grid-template-columns: 50px 1fr;
    }
    
    .day-header {
        padding: 4px 2px;
    }
    
    .day-name {
        font-size: 0.6rem;
        margin-bottom: 2px;
    }
    
    .day-number {
        font-size: 0.9rem;
        width: 20px;
        height: 20px;
    }
    
    .time-slot {
        font-size: 0.6rem;
        padding: 2px;
    }
    
    .event-block {
        padding: 2px;
        left: 1px;
        right: 1px;
    }
    
    .event-title {
        font-size: 0.6rem;
        margin-bottom: 1px;
    }
    
    .event-time,
    .event-instructor {
        display: none;
    }
    
    .join-btn {
        display: none;
    }
}