/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
    color: #E0E0E0;
    background-color: #0A0A0A;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 1rem;
    color: #FFFFFF;
}

h1 {
    font-size: 24px;
}

h2 {
    font-size: 20px;
}

h3 {
    font-size: 18px;
}

p {
    margin-bottom: 1rem;
    color: #A0A0A0;
}

/* Header */
.header {
    background-color: #111111;
    border-bottom: 1px solid #333333;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: #22C55E;
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}

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

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

.user-name {
    color: #FFFFFF;
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    font-family: inherit;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: #22C55E;
    color: #000000;
    font-weight: 600;
}

.btn-primary:hover:not(:disabled) {
    background-color: #16A34A;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: #22C55E;
    border: 1px solid #22C55E;
}

.btn-secondary:hover:not(:disabled) {
    background-color: #22C55E;
    color: #000000;
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-view {
    padding: 8px 16px;
    font-size: 14px;
    background-color: #1A1A1A;
    color: #A0A0A0;
    border: 1px solid #333333;
}

.btn-view:hover:not(:disabled) {
    background-color: #2A2A2A;
    color: #FFFFFF;
    border-color: #22C55E;
}

.btn-view.active {
    background-color: #22C55E;
    color: #000000;
    border-color: #22C55E;
    font-weight: 600;
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem;
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #333333;
    border-top: 3px solid #22C55E;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Authentication Prompt */
.auth-prompt {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    padding: 2rem;
}

.auth-card {
    background-color: #1A1A1A;
    border: 1px solid #333333;
    border-radius: 12px;
    padding: 3rem;
    text-align: center;
    max-width: 480px;
    width: 100%;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

.auth-card h2 {
    color: #FFFFFF;
    margin-bottom: 1rem;
}

.auth-card p {
    color: #A0A0A0;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.public-mode-notice {
    background-color: #22C55E;
    color: #000000;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    font-weight: 500;
}

.public-mode-notice .notice-text {
    margin: 0;
    color: #000000;
    font-weight: 600;
}

/* Calendar Container */
.calendar-container {
    background-color: #1A1A1A;
    border: 1px solid #333333;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

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

/* Calendar Filters */
.calendar-filters {
    position: relative;
}

.filter-dropdown {
    position: relative;
    display: inline-block;
}

.filter-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 8px 12px;
    background-color: #1A1A1A;
    border: 1px solid #333333;
    border-radius: 8px;
    color: #E0E0E0;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 160px;
    justify-content: space-between;
}

.filter-dropdown-btn:hover {
    border-color: #22C55E;
    background-color: #2A2A2A;
}

.filter-dropdown-btn.active {
    border-color: #22C55E;
    background-color: #2A2A2A;
}

.dropdown-arrow {
    transition: transform 0.2s ease;
}

.filter-dropdown-btn.active .dropdown-arrow {
    transform: rotate(180deg);
}

.filter-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    left: auto;
    background-color: #1A1A1A;
    border: 1px solid #333333;
    border-radius: 8px;
    margin-top: 4px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: none;
    min-width: 300px;
    max-width: 90vw;
}

.filter-dropdown-menu.show {
    display: block;
    animation: dropdownFadeIn 0.2s ease;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.filter-dropdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid #333333;
    font-weight: 600;
    color: #FFFFFF;
}

.filter-controls {
    display: flex;
    gap: 0.5rem;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 6px;
}

.filter-list {
    max-height: 250px;
    overflow-y: auto;
    padding: 0.5rem;
}

.filter-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    margin-bottom: 0.25rem;
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.filter-item:hover {
    background-color: #2A2A2A;
    border-color: #333333;
}

.filter-item.active {
    background-color: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.3);
}

.filter-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #E0E0E0;
    font-weight: 500;
    cursor: pointer;
    flex: 1;
}

.filter-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid #333333;
}

.filter-color.primary,
.filter-color.color-1  { background-color: #22C55E; border-color: #22C55E; }
.filter-color.secondary,
.filter-color.color-2  { background-color: #3B82F6; border-color: #3B82F6; }
.filter-color.tertiary,
.filter-color.color-3  { background-color: #F59E0B; border-color: #F59E0B; }

.filter-color.color-4  { background-color: #8B5CF6; border-color: #8B5CF6; }
.filter-color.color-5  { background-color: #EC4899; border-color: #EC4899; }
.filter-color.color-6  { background-color: #06B6D4; border-color: #06B6D4; }
.filter-color.color-7  { background-color: #EF4444; border-color: #EF4444; }
.filter-color.color-8  { background-color: #14B8A6; border-color: #14B8A6; }
.filter-color.color-9  { background-color: #EAB308; border-color: #EAB308; }
.filter-color.color-10 { background-color: #6366F1; border-color: #6366F1; }
.filter-color.color-11 { background-color: #84CC16; border-color: #84CC16; }
.filter-color.color-12 { background-color: #D946EF; border-color: #D946EF; }

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 36px;
    height: 20px;
    background-color: #333333;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    flex-shrink: 0;
}

.toggle-switch.active {
    background-color: #22C55E;
}

.toggle-slider {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background-color: #FFFFFF;
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.toggle-switch.active .toggle-slider {
    transform: translateX(16px);
}

/* FullCalendar Overrides */
.fc {
    font-family: inherit;
}

.fc-toolbar {
    margin-bottom: 1.5rem;
}

.fc-toolbar-title {
    color: #FFFFFF !important;
    font-size: 1.5rem;
    font-weight: 600;
}

.fc-button {
    background-color: #2A2A2A !important;
    border: 1px solid #333333 !important;
    color: #FFFFFF !important;
    padding: 8px 16px !important;
    border-radius: 6px !important;
    font-weight: 500 !important;
    transition: all 0.2s ease !important;
}

.fc-button:hover {
    background-color: #22C55E !important;
    color: #000000 !important;
    border-color: #22C55E !important;
}

.fc-button:disabled {
    opacity: 0.5 !important;
    cursor: not-allowed !important;
}

.fc-event {
    border-radius: 6px !important;
    border: none !important;
    font-weight: 500 !important;
    padding: 2px 6px !important;
    margin: 1px !important;
    cursor: pointer !important;
}

.fc-event-main {
    color: inherit !important;
}

.fc-daygrid-event {
    border-radius: 4px !important;
}

.fc-h-event {
    background-color: #22C55E !important;
    border-color: #22C55E !important;
    color: #000000 !important;
}

.fc-h-event .fc-event-main {
    color: #000000 !important;
}

.fc-event.primary,
.fc-event.color-1  { background-color: #22C55E !important; color: #000000 !important; } /* Green */
.fc-event.secondary,
.fc-event.color-2  { background-color: #3B82F6 !important; color: #000000 !important; } /* Blue */
.fc-event.tertiary,
.fc-event.color-3  { background-color: #F59E0B !important; color: #000000 !important; } /* Orange */

.fc-event.color-4  { background-color: #8B5CF6 !important; color: #000000 !important; } /* Purple */
.fc-event.color-5  { background-color: #EC4899 !important; color: #000000 !important; } /* Pink */
.fc-event.color-6  { background-color: #06B6D4 !important; color: #000000 !important; } /* Cyan */
.fc-event.color-7  { background-color: #EF4444 !important; color: #000000 !important; } /* Red */
.fc-event.color-8  { background-color: #14B8A6 !important; color: #000000 !important; } /* Teal */
.fc-event.color-9  { background-color: #EAB308 !important; color: #000000 !important; } /* Yellow */
.fc-event.color-10 { background-color: #6366F1 !important; color: #000000 !important; } /* Indigo */
.fc-event.color-11 { background-color: #84CC16 !important; color: #000000 !important; } /* Lime */
.fc-event.color-12 { background-color: #D946EF !important; color: #000000 !important; } /* Fuchsia */

/* Calendar day/time styling */
.fc-daygrid-day,
.fc-timegrid-slot {
    background-color: transparent !important;
}

.fc-daygrid-day-top {
    color: #A0A0A0 !important;
}

.fc-col-header-cell {
    background-color: #1A1A1A !important;
    border-color: #333333 !important;
}

.fc-col-header-cell-cushion {
    color: #FFFFFF !important;
    font-weight: 600 !important;
}

.fc-daygrid-day-frame {
    border-color: #333333 !important;
}

.fc-scrollgrid {
    border-color: #333333 !important;
}

.fc-scrollgrid td,
.fc-scrollgrid th {
    border-color: #333333 !important;
}

.fc-timegrid-slot {
    border-color: #333333 !important;
}

.fc-timegrid-axis {
    color: #A0A0A0 !important;
}

.fc-list-day-cushion {
    background-color: #1A1A1A !important;
    color: #FFFFFF !important;
}

.fc-list-event:hover {
    background-color: #2A2A2A !important;
}

.fc-list-event-time {
    color: #000000 !important;
    opacity: 0.7;
}

.fc-list-event-title,
.fc-list-event-title a {
    color: #000000 !important;
}

/* Apply background colors to list view rows */
tr.fc-list-event.color-1  { background-color: #22C55E !important; }
tr.fc-list-event.color-2  { background-color: #3B82F6 !important; }
tr.fc-list-event.color-3  { background-color: #F59E0B !important; }
tr.fc-list-event.color-4  { background-color: #8B5CF6 !important; }
tr.fc-list-event.color-5  { background-color: #EC4899 !important; }
tr.fc-list-event.color-6  { background-color: #06B6D4 !important; }
tr.fc-list-event.color-7  { background-color: #EF4444 !important; }
tr.fc-list-event.color-8  { background-color: #14B8A6 !important; }
tr.fc-list-event.color-9  { background-color: #EAB308 !important; }
tr.fc-list-event.color-10 { background-color: #6366F1 !important; }
tr.fc-list-event.color-11 { background-color: #84CC16 !important; }
tr.fc-list-event.color-12 { background-color: #D946EF !important; }

/* Error State */
.error-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    padding: 2rem;
}

.error-card {
    background-color: #1A1A1A;
    border: 1px solid #EF4444;
    border-radius: 12px;
    padding: 3rem;
    text-align: center;
    max-width: 480px;
    width: 100%;
    box-shadow: 0 4px 24px rgba(239, 68, 68, 0.1);
}

.error-card h3 {
    color: #EF4444;
    margin-bottom: 1rem;
}

.error-card p {
    color: #A0A0A0;
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: #1A1A1A;
    border: 1px solid #333333;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { 
        opacity: 0;
        transform: translateY(-20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: 2rem 2rem 1rem;
    border-bottom: 1px solid #333333;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.modal-header h3 {
    margin: 0;
    color: #FFFFFF;
    flex: 1;
    padding-right: 1rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #A0A0A0;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background-color: #2A2A2A;
    color: #FFFFFF;
}

.modal-body {
    padding: 1rem 2rem 2rem;
}

.event-detail {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1rem;
}

.event-detail strong {
    color: #22C55E;
    font-weight: 600;
}

.event-detail span,
.event-detail div {
    color: #E0E0E0;
    word-wrap: break-word;
}

/* Footer */
.footer {
    background-color: #111111;
    border-top: 1px solid #333333;
    padding: 2rem 0;
    margin-top: auto;
}

.footer p {
    text-align: center;
    color: #666666;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .auth-controls {
        width: 100%;
        justify-content: center;
    }

    .main-content {
        padding: 1rem;
    }

    .calendar-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .view-controls {
        order: 2;
    }

    .calendar-filters {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .filter-list {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .calendar {
        margin-top: 1rem;
    }

    .auth-card,
    .error-card {
        padding: 2rem;
        margin: 1rem;
    }

    .modal-content {
        width: 95%;
        margin: 1rem;
    }

    .modal-header,
    .modal-body {
        padding: 1.5rem;
    }

    .modal-header {
        padding-bottom: 1rem;
    }

    .modal-body {
        padding-top: 1rem;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 1rem;
    }

    .main-content {
        padding: 0.5rem;
    }

    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }

    .btn-large {
        padding: 14px 24px;
        font-size: 16px;
    }

    .auth-card,
    .error-card {
        padding: 1.5rem;
    }

    .calendar {
        padding: 0.5rem;
    }

    .fc-toolbar {
        flex-direction: column;
        gap: 1rem;
    }

    .fc-toolbar-chunk {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
}

/* Accessibility and Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles */
.btn:focus,
.modal-close:focus {
    outline: 2px solid #22C55E;
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .btn-secondary {
        border-width: 2px;
    }
    
    .fc-event {
        border: 2px solid currentColor !important;
    }
}

.view-controls {
    display: flex;
    border-radius: 8px;
    overflow: hidden;
    background-color: #0A0A0A;
    border: 1px solid #333333;
}

.view-controls .btn-view {
    border-radius: 0;
    border: none;
    border-right: 1px solid #333333;
    margin: 0;
}

.view-controls .btn-view:not(:last-child) {
    border-right: 1px solid #333333;
}

.calendar {
    background-color: #0A0A0A;
    border-radius: 8px;
    padding: 1rem;
    border: 1px solid #333333;
}