/**
 * Plan B Academy Calendar Styles
 */

:root {
    --accent: #ff5c00;
    --accent-light: #fff0e6;
    --common: #6366f1;
    --common-light: #eef2ff;
    --business: #10b981;
    --business-light: #ecfdf5;
    --dev: #f59e0b;
    --dev-light: #fffbeb;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.5;
}

/* Header */
.header {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* Header Right Section */
.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.25rem;
    background: var(--gray-100);
    padding: 0.25rem;
    border-radius: 8px;
}

.tab {
    padding: 0.5rem 1.25rem;
    border: none;
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: all 0.2s;
}

.tab:hover { color: var(--gray-800); }
.tab.active {
    background: white;
    color: var(--accent);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Refresh Button */
.btn-refresh {
    padding: 0.5rem;
    border: 1px solid var(--gray-200);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    color: var(--gray-500);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-refresh:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.btn-refresh.spinning svg {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Controls */
.controls {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 0.75rem 2rem;
}

.controls-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-divider {
    width: 1px;
    height: 24px;
    background: var(--gray-200);
    margin: 0 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-200);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    color: var(--gray-600);
}

.filter-btn:hover {
    border-color: var(--gray-300);
}

.filter-btn.active { border-color: currentColor; }

.filter-track[data-track="common"] { color: var(--common); }
.filter-track[data-track="business"] { color: var(--business); }
.filter-track[data-track="dev"] { color: var(--dev); }

.filter-track.active[data-track="common"] { background: var(--common-light); }
.filter-track.active[data-track="business"] { background: var(--business-light); }
.filter-track.active[data-track="dev"] { background: var(--dev-light); }

.filter-status.active[data-value="true"] {
    background: #dcfce7;
    color: #166534;
    border-color: #166534;
}

.filter-status.active[data-value="false"] {
    background: #fef3c7;
    color: #92400e;
    border-color: #92400e;
}

.filter-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

/* Stats Bar */
.stats-bar {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 0.5rem 2rem;
}

.stats-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.stat-item {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.stat-value {
    font-weight: 600;
    color: var(--gray-800);
}

.stat-value.confirmed {
    color: #166534;
}

/* Main */
.main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
}

/* Loading State */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    gap: 1rem;
}

.loading.hidden {
    display: none;
}

.hidden {
    display: none !important;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-text {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* Error State */
.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.error-icon {
    font-size: 3rem;
}

.error-message {
    color: var(--gray-600);
    text-align: center;
}

.btn-retry {
    padding: 0.75rem 1.5rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s;
}

.btn-retry:hover {
    background: #e55500;
}

/* Cache Indicator */
.cache-indicator {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--gray-800);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.75rem;
    opacity: 0;
    transition: all 0.3s;
    z-index: 1000;
}

.cache-indicator.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-size: 0.875rem;
    opacity: 0;
    transition: all 0.3s;
    z-index: 1001;
}

.toast.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast-success {
    background: #166534;
    color: white;
}

.toast-warning {
    background: #92400e;
    color: white;
}

.toast-info {
    background: var(--gray-800);
    color: white;
}

/* Timeline Container */
.timeline-container {
    background: white;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.timeline-container.hidden {
    display: none;
}

/* Column Headers */
.timeline-header {
    display: grid;
    grid-template-columns: 100px 1fr 1fr 1fr;
    border-bottom: 2px solid var(--gray-200);
    background: white;
}

.header-cell {
    padding: 1rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.header-cell.date-col {
    background: var(--gray-50);
    color: var(--gray-600);
    text-align: left;
}

.header-cell[data-track="common"] {
    background: var(--common-light);
    color: var(--common);
}

.header-cell[data-track="business"] {
    background: var(--business-light);
    color: var(--business);
}

.header-cell[data-track="dev"] {
    background: var(--dev-light);
    color: var(--dev);
}

.header-owner {
    font-size: 0.75rem;
    font-weight: 400;
    opacity: 0.7;
}

/* Timeline Body */
.timeline-body {
    display: flex;
    flex-direction: column;
}

/* Week Row */
.week-row {
    display: grid;
    grid-template-columns: 100px 1fr 1fr 1fr;
    border-bottom: 1px solid var(--gray-100);
}

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

.week-row.month-start {
    border-top: 2px solid var(--gray-300);
}

/* Date Cell */
.date-cell {
    padding: 0.75rem;
    background: var(--gray-50);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    min-height: 60px;
}

.date-cell.month-label {
    background: var(--accent-light);
}

.month-name {
    font-size: 0.625rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.week-dates {
    font-size: 0.75rem;
    color: var(--gray-600);
    font-weight: 500;
}

/* Track Cell */
.track-cell {
    padding: 0.5rem;
    border-right: 1px solid var(--gray-100);
    min-height: 60px;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

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

.track-cell.hidden {
    display: none;
}

/* Events */
.event {
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.event:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.event[data-track="common"] {
    background: var(--common);
    color: white;
}

.event[data-track="business"] {
    background: var(--business);
    color: white;
}

.event[data-track="dev"] {
    background: var(--dev);
    color: white;
}

.event.exam {
    border: 2px dashed rgba(255,255,255,0.5);
}

.event.unconfirmed {
    opacity: 0.7;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    padding: 0.125rem 0.375rem;
    border-radius: 3px;
    margin-top: 0.125rem;
}

.status-badge.confirmed {
    background: rgba(255,255,255,0.25);
    color: white;
}

.status-badge.unconfirmed {
    background: rgba(0,0,0,0.15);
    color: rgba(255,255,255,0.9);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.status-dot.confirmed {
    background: #22c55e;
}

.status-dot.unconfirmed {
    background: #f59e0b;
}

.status-dot.contacted {
    background: #3b82f6;
}

.status-dot.not-contacted {
    background: #ef4444;
}

.event-name {
    font-weight: 600;
    line-height: 1.2;
}

.event-meta {
    font-size: 0.625rem;
    opacity: 0.85;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Companies Tab */
.companies-container {
    display: none;
}

.companies-container.active {
    display: block;
}

.companies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
}

.company-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1rem;
    transition: all 0.2s;
    cursor: pointer;
}

.company-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(255, 92, 0, 0.1);
}

.company-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-800);
}

.company-meta {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

.company-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-top: 0.5rem;
}

.company-status {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.company-status.confirmed {
    background: #dcfce7;
    color: #166534;
}

.company-status.unconfirmed {
    background: #fef3c7;
    color: #92400e;
}

.company-status.contacted {
    background: #dbeafe;
    color: #1e40af;
}

.company-status.not-contacted {
    background: #fee2e2;
    color: #991b1b;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: 12px;
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform 0.2s;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
}

.modal-track {
    display: inline-flex;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-top: 0.375rem;
}

.modal-track[data-track="common"] { background: var(--common-light); color: var(--common); }
.modal-track[data-track="business"] { background: var(--business-light); color: var(--business); }
.modal-track[data-track="dev"] { background: var(--dev-light); color: var(--dev); }

.modal-close {
    width: 28px;
    height: 28px;
    border: none;
    background: var(--gray-100);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-500);
    flex-shrink: 0;
}

.modal-close:hover {
    background: var(--gray-200);
}

.modal-body {
    padding: 1.25rem;
}

.modal-row {
    display: flex;
    gap: 1rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-100);
}

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

.modal-label {
    width: 80px;
    flex-shrink: 0;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
}

.modal-value {
    font-size: 0.875rem;
    color: var(--gray-800);
}

/* Responsive */
@media (max-width: 900px) {
    .timeline-header,
    .week-row {
        grid-template-columns: 80px 1fr 1fr 1fr;
    }

    .date-cell {
        padding: 0.5rem;
    }

    .event {
        padding: 0.375rem 0.5rem;
        font-size: 0.7rem;
    }

    .controls-content {
        justify-content: flex-start;
    }
}

@media (max-width: 600px) {
    .header {
        padding: 1rem;
    }

    .header-content {
        flex-direction: column;
        align-items: stretch;
    }

    .header-right {
        justify-content: space-between;
    }

    .controls {
        padding: 0.75rem 1rem;
    }

    .controls-content {
        flex-wrap: wrap;
    }

    .filter-divider {
        display: none;
    }

    .main {
        padding: 1rem;
    }

    .timeline-header,
    .week-row {
        grid-template-columns: 60px 1fr 1fr 1fr;
    }

    .header-cell {
        padding: 0.5rem;
        font-size: 0.75rem;
    }

    .event-meta {
        display: none;
    }

    .companies-grid {
        grid-template-columns: 1fr;
    }

    .header-actions {
        display: none;
    }
}

/* Header Action Buttons */
.header-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--gray-200);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-600);
    text-decoration: none;
    transition: all 0.2s;
}

.btn-header:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-light);
}

.btn-header svg {
    flex-shrink: 0;
}

/* Improve Popup */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
}

.popup-overlay.active {
    opacity: 1;
    visibility: visible;
}

.popup {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    max-width: 420px;
    width: 90%;
    transform: scale(0.95);
    transition: transform 0.2s;
}

.popup-overlay.active .popup {
    transform: scale(1);
}

.popup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--gray-200);
}

.popup-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
}

.popup-close {
    padding: 0.375rem;
    border: none;
    background: transparent;
    border-radius: 4px;
    cursor: pointer;
    color: var(--gray-400);
    transition: all 0.2s;
}

.popup-close:hover {
    color: var(--gray-600);
    background: var(--gray-100);
}

.popup-body {
    padding: 1.25rem;
}

.popup-body p {
    margin-bottom: 0.75rem;
    color: var(--gray-700);
    font-size: 0.925rem;
    line-height: 1.6;
}

.popup-body p:last-child {
    margin-bottom: 0;
}

.popup-body a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.popup-body a:hover {
    text-decoration: underline;
}

.popup-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
}

.popup-btn {
    padding: 0.5rem 1.25rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.popup-btn:hover {
    background: #e65400;
}