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

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --success: #16a34a;
    --success-hover: #15803d;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --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;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    background: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.6;
}

.container {
    max-width: 1800px;
    margin: 0 auto;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background: white;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.header h1 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

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

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

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.sidebar {
    width: 400px;
    background: white;
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h2 {
    font-size: 1.25rem;
}

.search-bar {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.search-bar input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
    font-size: 0.875rem;
}

.events-list {
    flex: 1;
    overflow-y: auto;
}

.event-item {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    cursor: pointer;
    transition: background 0.15s;
}

.event-item:hover {
    background: var(--gray-50);
}

.event-item.active {
    background: var(--gray-100);
    border-left: 3px solid var(--primary);
}

.event-item-title {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.event-item-meta {
    font-size: 0.875rem;
    color: var(--gray-600);
    display: flex;
    gap: 0.75rem;
}

.editor {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--gray-500);
    font-size: 1.125rem;
}

.editor-content {
    max-width: 900px;
    margin: 0 auto;
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--gray-200);
}

.editor-header h2 {
    font-size: 1.75rem;
}

.editor-actions {
    display: flex;
    gap: 0.75rem;
}

.form-section {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-section h3 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--gray-800);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--gray-700);
    font-size: 0.875rem;
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group input[type="number"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.625rem;
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-family: inherit;
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
}

.form-group input[type="checkbox"] {
    width: 1.125rem;
    height: 1.125rem;
    cursor: pointer;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.error {
    border-color: var(--danger) !important;
}

.error-message {
    color: var(--danger);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.validation-errors {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.validation-errors h4 {
    color: var(--danger);
    margin-bottom: 0.5rem;
}

.validation-errors ul {
    list-style: none;
    padding-left: 0;
}

.validation-errors li {
    color: var(--danger);
    font-size: 0.875rem;
    padding: 0.25rem 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn:hover {
    background: var(--gray-300);
}

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

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: var(--success-hover);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: var(--danger-hover);
}

.btn-small {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.paragraph-item,
.photo-item {
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--gray-50);
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.item-title {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.item-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-icon {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.add-item-btn {
    width: 100%;
    margin-top: 0.5rem;
}

.ics-section {
    background: var(--gray-50);
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
    padding: 1rem;
    margin-top: 1rem;
}

.ics-preview {
    background: white;
    border: 1px solid var(--gray-300);
    padding: 0.75rem;
    border-radius: 0.375rem;
    font-family: monospace;
    font-size: 0.75rem;
    white-space: pre-wrap;
    margin: 0.75rem 0;
    max-height: 200px;
    overflow-y: auto;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 0.5rem;
    padding: 2rem;
    max-width: 400px;
    width: 90%;
}

.modal-content h3 {
    margin-bottom: 1rem;
}

.modal-content p {
    margin-bottom: 1.5rem;
    color: var(--gray-700);
}

.modal-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}