:root {
    --primary-blue: #3b82f6;
    --secondary-blue: #60a5fa;
    --light-blue: #dbeafe;
    --ultra-light-blue: #eff6ff;
    --white: #ffffff;
    --soft-white: #fefefe;
    --ghost-white: #f8fafc;
    --blue-gray: #64748b;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-light: rgba(59, 130, 246, 0.1);
    --border-medium: rgba(59, 130, 246, 0.2);
    --shadow-soft: 0 4px 32px rgba(59, 130, 246, 0.1);
    --shadow-medium: 0 8px 40px rgba(59, 130, 246, 0.15);
    --shadow-strong: 0 16px 64px rgba(59, 130, 246, 0.2);
    --backdrop-blur: blur(20px);
    
    /* Purple theme colors */
    --primary-purple: #8b5cf6;
    --secondary-purple: #a78bfa;
    --light-purple: #ede9fe;
    --dark-purple: #7c3aed;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, 
        var(--white) 0%, 
        var(--ultra-light-blue) 25%, 
        var(--light-blue) 50%, 
        var(--ultra-light-blue) 75%, 
        var(--soft-white) 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 400;
    min-height: 100vh;
    margin: 0;
    line-height: 1.6;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(167, 139, 250, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(237, 233, 254, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Main Layout */
.main-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem 1rem;
    position: relative;
}

/* Month Header */
.month-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.current-month {
    font-family: 'Poppins', 'Inter', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.02em;
    text-shadow: 0 4px 20px rgba(139, 92, 246, 0.15);
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--secondary-purple) 50%, var(--dark-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.current-month::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--secondary-purple) 50%, var(--dark-purple) 100%);
    opacity: 0.1;
    border-radius: 1rem;
    z-index: -1;
    padding: 0.5rem;
    margin: -0.5rem;
}

.help-icon-container {
    position: absolute;
    top: 50%;
    right: -3rem;
}

.help-icon {
    width: 2rem;
    height: 2rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-soft);
}

.help-icon:hover {
    background: rgba(139, 92, 246, 0.1);
    border-color: var(--primary-purple);
    box-shadow: var(--shadow-medium);
}

.help-icon i {
    width: 1rem;
    height: 1rem;
    color: var(--primary-purple);
}

/* Calendar Main Container */
.calendar-main {
    width: 100%;
    max-width: 1000px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border-light);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: var(--shadow-medium);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.calendar-main:hover {
    box-shadow: var(--shadow-strong);
}

#calendar {
    font-family: 'Inter', sans-serif;
    background: transparent;
}

/* FullCalendar Customization */
.fc {
    background: transparent;
}

.fc-toolbar {
    margin-bottom: 2rem;
}

.fc-toolbar-title {
    font-family: 'Poppins', 'Inter', serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    opacity: 0.7;
}

.fc-button-primary {
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    color: var(--primary-purple);
    font-weight: 500;
    border-radius: 0.75rem;
    padding: 0.5rem 1rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.fc-button-primary:hover,
.fc-button-primary:focus {
    background: var(--primary-purple);
    color: var(--white);
    border-color: var(--primary-purple);
    box-shadow: var(--shadow-soft);
}

.fc-button-primary:disabled {
    background: rgba(148, 163, 184, 0.1);
    border-color: var(--border-light);
    color: var(--text-muted);
}

.fc-theme-standard .fc-scrollgrid {
    border: 1px solid var(--border-light);
    border-radius: 1rem;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(15px);
}

.fc-theme-standard td, 
.fc-theme-standard th {
    border-color: var(--border-light);
}

.fc-col-header {
    background: rgba(139, 92, 246, 0.05);
    backdrop-filter: blur(10px);
}

.fc-col-header-cell {
    padding: 1rem 0.5rem;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-color: var(--border-light);
}

.fc-daygrid-day {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.fc-daygrid-day:hover {
    background: rgba(139, 92, 246, 0.05);
}

.fc-daygrid-day-number {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem;
    transition: all 0.2s ease;
}

.fc-day-today {
    background: rgba(139, 92, 246, 0.08) !important;
}

.fc-day-today .fc-daygrid-day-number {
    color: var(--primary-purple);
    font-weight: 600;
}

.fc-daygrid-day-frame {
    min-height: 80px;
    padding: 0.25rem;
}

/* Calendar Events */
.fc-event {
    border: none;
    border-radius: 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    margin: 0.125rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    backdrop-filter: blur(5px);
    border-left: 3px solid rgba(255, 255, 255, 0.3) !important;
}

.fc-event:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    opacity: 0.9;
}

.fc-event-title {
    color: var(--white);
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* List View Specific Styles */
.fc-list {
    background: transparent !important;
}

.fc-list-table {
    background: rgba(255, 255, 255, 0.8) !important;
    backdrop-filter: blur(10px);
}

.fc-list-event {
    background: rgba(255, 255, 255, 0.9) !important;
    border-bottom: 1px solid var(--border-light) !important;
    transition: all 0.2s ease !important;
}

.fc-list-event:hover {
    background: rgba(139, 92, 246, 0.1) !important;
}

.fc-list-event .fc-list-event-title {
    color: var(--text-primary) !important;
    font-weight: 500 !important;
}

.fc-list-event:hover .fc-list-event-title {
    color: var(--primary-purple) !important;
}

.fc-list-event .fc-list-event-time {
    color: var(--text-secondary) !important;
    font-weight: 600 !important;
}

.fc-list-event:hover .fc-list-event-time {
    color: var(--dark-purple) !important;
}

.fc-list-day-cushion {
    background: rgba(139, 92, 246, 0.05) !important;
    color: var(--primary-purple) !important;
    font-weight: 600 !important;
}

/* Specific Badge Color Classes for Calendar Events - More specific selectors */
.fc .fc-daygrid-event.badge-blue,
.fc .fc-event.badge-blue {
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%) !important;
    border-color: #3b82f6 !important;
    color: white !important;
}

.fc .fc-daygrid-event.badge-green,
.fc .fc-event.badge-green {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%) !important;
    border-color: #10b981 !important;
    color: white !important;
}

.fc .fc-daygrid-event.badge-red,
.fc .fc-event.badge-red {
    background: linear-gradient(135deg, #ef4444 0%, #f87171 100%) !important;
    border-color: #ef4444 !important;
    color: white !important;
}

.fc .fc-daygrid-event.badge-yellow,
.fc .fc-event.badge-yellow {
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%) !important;
    border-color: #f59e0b !important;
    color: white !important;
}

.fc .fc-daygrid-event.badge-purple,
.fc .fc-event.badge-purple {
    background: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%) !important;
    border-color: #8b5cf6 !important;
    color: white !important;
}

.fc .fc-daygrid-event.badge-pink,
.fc .fc-event.badge-pink {
    background: linear-gradient(135deg, #ec4899 0%, #f472b6 100%) !important;
    border-color: #ec4899 !important;
    color: white !important;
}

.fc .fc-daygrid-event.badge-indigo,
.fc .fc-event.badge-indigo {
    background: linear-gradient(135deg, #6366f1 0%, #818cf8 100%) !important;
    border-color: #6366f1 !important;
    color: white !important;
}

.fc .fc-daygrid-event.badge-gray,
.fc .fc-event.badge-gray {
    background: linear-gradient(135deg, #6b7280 0%, #9ca3af 100%) !important;
    border-color: #6b7280 !important;
    color: white !important;
}

.fc .fc-daygrid-event.badge-orange,
.fc .fc-event.badge-orange {
    background: linear-gradient(135deg, #f97316 0%, #fb923c 100%) !important;
    border-color: #f97316 !important;
    color: white !important;
}

.fc .fc-daygrid-event.badge-teal,
.fc .fc-event.badge-teal {
    background: linear-gradient(135deg, #14b8a6 0%, #5eead4 100%) !important;
    border-color: #14b8a6 !important;
    color: white !important;
}

/* Event title color for all badge types */
.fc .fc-daygrid-event.badge-blue .fc-event-title,
.fc .fc-daygrid-event.badge-green .fc-event-title,
.fc .fc-daygrid-event.badge-red .fc-event-title,
.fc .fc-daygrid-event.badge-yellow .fc-event-title,
.fc .fc-daygrid-event.badge-purple .fc-event-title,
.fc .fc-daygrid-event.badge-pink .fc-event-title,
.fc .fc-daygrid-event.badge-indigo .fc-event-title,
.fc .fc-daygrid-event.badge-gray .fc-event-title,
.fc .fc-daygrid-event.badge-orange .fc-event-title,
.fc .fc-daygrid-event.badge-teal .fc-event-title {
    color: white !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Hover effects for each color */
.fc .fc-daygrid-event.badge-blue:hover,
.fc .fc-event.badge-blue:hover {
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4) !important;
}

.fc .fc-daygrid-event.badge-green:hover,
.fc .fc-event.badge-green:hover {
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4) !important;
}

.fc .fc-daygrid-event.badge-red:hover,
.fc .fc-event.badge-red:hover {
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.4) !important;
}

.fc .fc-daygrid-event.badge-yellow:hover,
.fc .fc-event.badge-yellow:hover {
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4) !important;
}

.fc .fc-daygrid-event.badge-purple:hover,
.fc .fc-event.badge-purple:hover {
    box-shadow: 0 4px 16px rgba(139, 92, 246, 0.4) !important;
}

.fc .fc-daygrid-event.badge-pink:hover,
.fc .fc-event.badge-pink:hover {
    box-shadow: 0 4px 16px rgba(236, 72, 153, 0.4) !important;
}

.fc .fc-daygrid-event.badge-indigo:hover,
.fc .fc-event.badge-indigo:hover {
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4) !important;
}

.fc .fc-daygrid-event.badge-gray:hover,
.fc .fc-event.badge-gray:hover {
    box-shadow: 0 4px 16px rgba(107, 114, 128, 0.4) !important;
}

.fc .fc-daygrid-event.badge-orange:hover,
.fc .fc-event.badge-orange:hover {
    box-shadow: 0 4px 16px rgba(249, 115, 22, 0.4) !important;
}

.fc .fc-daygrid-event.badge-teal:hover,
.fc .fc-event.badge-teal:hover {
    box-shadow: 0 4px 16px rgba(20, 184, 166, 0.4) !important;
}

/* Modal Customization */
.custom-modal {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border-light);
    border-radius: 1.5rem;
    box-shadow: var(--shadow-strong);
    overflow: hidden;
}

.custom-modal .modal-header {
    padding: 1.5rem 1.5rem 0;
    background: transparent;
}

.custom-modal .modal-title {
    font-family: 'Poppins', 'Inter', serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.custom-close {
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    padding: 0.5rem;
    transition: all 0.2s ease;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.custom-close::before {
    content: "×";
    font-size: 1.5rem;
    line-height: 1;
    color: var(--primary-purple);
    font-weight: 600;
}

.custom-close:hover {
    background: var(--primary-purple);
    color: var(--white);
}

.custom-close:hover::before {
    color: var(--white);
}

.class-details-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.class-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-light);
    border-radius: 1rem;
    padding: 1.25rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.class-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-purple) 0%, var(--secondary-purple) 100%);
}

.class-card:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: var(--primary-purple);
    box-shadow: var(--shadow-medium);
}

.class-time {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--primary-purple);
    font-weight: 600;
    margin-bottom: 0.5rem;
    background: rgba(139, 92, 246, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    display: inline-block;
}

.class-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.class-description {
    line-height: 1.6;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: rgba(139, 92, 246, 0.05);
    border-radius: 0.5rem;
    border-left: 3px solid rgba(139, 92, 246, 0.3);
}

.class-description:empty {
    display: none;
}

.class-links {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.class-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: rgba(139, 92, 246, 0.1);
    color: var(--primary-purple);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid rgba(139, 92, 246, 0.2);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(5px);
}

.class-link:hover {
    background: var(--primary-purple);
    color: var(--white);
    border-color: var(--primary-purple);
    text-decoration: none;
    box-shadow: var(--shadow-soft);
}

/* Admin Access */
.admin-access {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1000;
}

.admin-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: var(--backdrop-blur);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.75rem 1rem;
    border-radius: 1rem;
    border: 1px solid var(--border-light);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-soft);
}

.admin-btn:hover {
    background: var(--primary-purple);
    color: var(--white);
    border-color: var(--primary-purple);
    text-decoration: none;
    box-shadow: var(--shadow-medium);
}

.feather-sm {
    width: 16px;
    height: 16px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: var(--backdrop-blur);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner .spinner-border {
    color: var(--primary-purple);
    width: 2.5rem;
    height: 2.5rem;
}

/* No Classes State */
.no-classes {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
    font-style: italic;
}

.no-classes-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 991.98px) {
    .main-wrapper {
        padding: 1.5rem 1rem;
    }
    
    .calendar-main {
        padding: 1.5rem;
    }
    
    .current-month {
        font-size: 2.5rem;
    }
    
    .help-icon-container {
        position: static;
        margin-top: 1rem;
        transform: none;
    }
    
    .admin-access {
        position: static;
        margin-top: 2rem;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .main-wrapper {
        padding: 1rem 0.5rem;
    }
    
    .calendar-main {
        border-radius: 1rem;
        padding: 1rem;
    }
    
    .current-month {
        font-size: 2rem;
    }
    
    .month-header {
        margin-bottom: 2rem;
    }
    
    .fc-toolbar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .fc-toolbar-title {
        font-size: 1.25rem;
    }
    
    .fc-daygrid-day-frame {
        min-height: 60px;
    }
    
    .class-card {
        padding: 1rem;
    }
    
    /* Enhanced mobile list view */
    .fc-list-event {
        padding: 0.75rem !important;
    }
    
    .fc-list-event .fc-list-event-title {
        font-size: 0.9rem !important;
        line-height: 1.4 !important;
    }
    
    .fc-list-event .fc-list-event-time {
        font-size: 0.8rem !important;
    }
}

@media (max-width: 575.98px) {
    .current-month {
        font-size: 1.75rem;
    }
    
    .calendar-main {
        margin: 0 0.5rem;
        padding: 0.75rem;
    }
    
    .fc-event {
        font-size: 0.7rem;
        padding: 0.125rem 0.25rem;
    }
    
    .class-links {
        flex-direction: column;
    }
    
    /* Mobile-specific list view improvements */
    .fc-list {
        font-size: 0.85rem !important;
    }
    
    .fc-list-event {
        padding: 0.5rem !important;
    }
    
    .fc-list-event .fc-list-event-title {
        font-size: 0.85rem !important;
        font-weight: 500 !important;
    }
    
    .fc-list-event .fc-list-event-time {
        font-size: 0.75rem !important;
        margin-bottom: 0.25rem !important;
    }
    
    .fc-list-day-cushion {
        padding: 0.5rem !important;
        font-size: 0.8rem !important;
    }
}

/* Animation for smooth interactions */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.calendar-main {
    animation: fadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.current-month {
    animation: fadeIn 1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

/* Improved scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(139, 92, 246, 0.05);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: rgba(139, 92, 246, 0.3);
    border-radius: 4px;
    transition: background 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(139, 92, 246, 0.5);
}

/* Additional mobile optimizations */
@media (max-width: 480px) {
    .current-month {
        font-size: 1.5rem;
    }
    
    .help-icon-container {
        display: none;
    }
    
    .fc-toolbar-chunk {
        display: flex !important;
        justify-content: center !important;
        gap: 0.5rem !important;
    }
    
    .fc-button {
        padding: 0.375rem 0.75rem !important;
        font-size: 0.8rem !important;
    }
    
    .fc-col-header-cell {
        padding: 0.5rem 0.25rem !important;
        font-size: 0.7rem !important;
    }
    
    .fc-daygrid-day-number {
        font-size: 0.8rem !important;
        padding: 0.25rem !important;
    }
    
    .modal-dialog {
        margin: 0.5rem !important;
    }
    
    .class-card {
        padding: 0.75rem !important;
    }
    
    .class-time {
        font-size: 0.8rem !important;
        padding: 0.25rem 0.4rem !important;
    }
    
    .class-title {
        font-size: 1rem !important;
    }
    
    .class-description {
        font-size: 0.85rem !important;
    }
    
    .class-link {
        font-size: 0.75rem !important;
        padding: 0.375rem 0.5rem !important;
    }
}