/* Modern dark theme inspired by shadcn */
:root {
    --background: #09090B;
    --foreground: #FAFAFA;
    --muted: #27272A;
    --muted-foreground: #A1A1AA;
    --popover: #18181B;
    --border: #27272A;
    --input: #27272A;
    --primary: #FAFAFA;
    --secondary: #27272A;
    --success: #22c55e;
    --error: #ef4444;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--foreground);
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--foreground);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.tab-button {
    background-color: var(--secondary);
    color: var(--muted-foreground);
    border: none;
    padding: 12px 24px;
    cursor: pointer;
    border-radius: 6px 6px 0 0;
    font-size: 1rem;
    transition: all 0.2s ease-in-out;
}

.tab-button:hover {
    background-color: var(--muted);
    color: var(--foreground);
}

.tab-button.active {
    background-color: var(--muted);
    color: var(--foreground);
    border-bottom: 2px solid var(--primary);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-content.active {
    display: block;
}

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

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    margin-bottom: 0.5rem;
    color: var(--foreground);
    font-weight: 500;
}

.form-group input[type="text"],
.form-group textarea,
.form-group select {
    background-color: var(--input);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 12px;
    color: var(--foreground);
    font-size: 1rem;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
}

.form-group select {
    cursor: pointer;
}

.form-group select[multiple] {
    min-height: 100px;
    max-height: 150px;
    overflow-y: auto;
    padding: 8px;
}

.form-group select[multiple] option {
    padding: 8px;
    margin-bottom: 4px;
    border-radius: 4px;
    cursor: pointer;
}

.form-group select[multiple] option:hover {
    background-color: rgba(147, 51, 234, 0.2);
}

.form-group select[multiple] option:checked {
    background-color: rgba(147, 51, 234, 0.4);
    color: var(--foreground);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group small {
    margin-top: 0.5rem;
    color: var(--muted-foreground);
    font-size: 0.875rem;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s ease-in-out;
    font-family: inherit;
}

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

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

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

.btn-danger:hover {
    opacity: 0.9;
}

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

.btn-success:hover {
    opacity: 0.9;
}

.btn-copy {
    background-color: var(--muted);
    color: var(--foreground);
    padding: 8px 16px;
    font-size: 0.9rem;
    transition: all 0.2s ease-in-out;
}

.btn-copy:hover {
    background-color: rgba(147, 51, 234, 0.3);
    border-color: rgba(147, 51, 234, 0.5);
}

/* Messages */
.message {
    margin-top: 1rem;
    padding: 12px;
    border-radius: 6px;
    display: none;
    font-weight: 500;
    animation: slideIn 0.3s ease-out;
}

.message.success {
    background-color: rgba(34, 197, 94, 0.15);
    border: 2px solid var(--success);
    color: var(--success);
    display: block;
}

.message.error {
    background-color: rgba(239, 68, 68, 0.15);
    border: 2px solid var(--error);
    color: var(--error);
    display: block;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Element Cards */
.element-card {
    background-color: var(--secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.element-card.compact {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
}

.element-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.element-card h3 {
    color: var(--foreground);
    margin-bottom: 0;
    font-size: 1rem;
    font-weight: 600;
}

.element-type-badge {
    background-color: var(--muted);
    color: var(--muted-foreground);
    padding: 3px 10px;
    border-radius: 10px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    font-weight: 600;
}

.compact-grid {
    gap: 0.5rem;
}

.compact-grid .form-group {
    margin-bottom: 0;
}

.compact-grid label {
    margin-bottom: 0.2rem;
    font-size: 0.85rem;
    font-weight: 500;
}

.compact-grid input,
.compact-grid select,
.compact-grid textarea {
    font-size: 0.85rem;
    padding: 6px 8px;
}

.element-card-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.85rem;
}

/* Prompt Cards */
.prompt-card {
    background-color: var(--secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.prompt-card h3 {
    color: var(--foreground);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.prompt-card .timestamp {
    color: var(--muted-foreground);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.prompt-card textarea {
    width: 100%;
    background-color: var(--input);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 12px;
    color: var(--foreground);
    font-family: monospace;
    font-size: 0.875rem;
}

/* Checkbox */
input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    margin-right: 8px;
}

/* Responsive */
@media (max-width: 768px) {
    .form-grid,
    .form-grid-3col {
        grid-template-columns: 1fr;
    }

    .tabs {
        flex-wrap: wrap;
    }

    .tab-button {
        flex: 1 1 auto;
    }
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* AI Helper Section */
.ai-helper-section {
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.1) 0%, rgba(79, 70, 229, 0.1) 100%);
    border: 1px solid rgba(147, 51, 234, 0.3);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.ai-helper-section h3 {
    color: var(--foreground);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ai-helper-description {
    color: var(--muted-foreground);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.ai-input-group {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.ai-input-group input {
    flex: 1;
}

.ai-input-group button {
    flex-shrink: 0;
    white-space: nowrap;
}

.btn-ai {
    background: linear-gradient(135deg, #9333ea 0%, #4f46e5 100%);
    color: white;
    border: none;
}

.btn-ai:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(147, 51, 234, 0.4);
}

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

.ai-icon {
    font-size: 1.2rem;
    display: inline-block;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.divider {
    height: 1px;
    background: var(--border);
    margin: 2rem 0;
}