:root {
    --primary: #0d9488;
    --primary-dark: #0f766e;
    --primary-light: #ccfbf1;
    --accent: #f59e0b;
    --accent-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --success: #22c55e;
    --success-light: #dcfce7;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --log-bg: #0f172a;
    --log-text: #e2e8f0;
    --log-accent: #4ade80;
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.app-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 1.5rem 2rem;
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
}

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

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo .subtitle {
    font-size: 0.8rem;
    opacity: 0.8;
    font-weight: 400;
}

.tagline {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Container */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 1.5rem;
    width: 100%;
    flex: 1;
}

/* Steps nav */
.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 1.5rem;
}

.step {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-light);
    cursor: default;
    transition: all 0.2s;
}

.step.active {
    background: var(--primary);
    color: white;
    font-weight: 600;
}

.step.completed {
    color: var(--primary);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    background: var(--border);
    color: var(--text-light);
}

.step.active .step-number {
    background: rgba(255,255,255,0.3);
    color: white;
}

.step.completed .step-number {
    background: var(--primary-light);
    color: var(--primary);
}

.step-line {
    width: 30px;
    height: 2px;
    background: var(--border);
}

/* Card */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border: 1px solid var(--border);
}

.card h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.card-desc {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--text);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group select {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    transition: border-color 0.2s;
    font-family: inherit;
    background: var(--card-bg);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.hint {
    display: block;
    font-size: 0.78rem;
    color: var(--text-light);
    margin-top: 0.3rem;
}

.hint code {
    background: var(--bg);
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
    font-size: 0.8rem;
}

.input-with-toggle {
    position: relative;
    display: flex;
}

.input-with-toggle input {
    flex: 1;
    padding-right: 4.5rem !important;
}

.toggle-visibility {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: var(--bg);
    color: var(--text-light);
    font-size: 0.78rem;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
}

/* Buttons */
.btn {
    padding: 0.6rem 1.25rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 1.5px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border);
}

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

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-small {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

.btn-start {
    padding: 0.75rem 2rem;
    font-size: 1rem;
}

.button-row {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    justify-content: flex-end;
}

/* Status messages */
.status-message {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    margin-top: 1rem;
}

.status-message.success {
    background: var(--success-light);
    color: #166534;
    border: 1px solid #bbf7d0;
}

.status-message.error {
    background: var(--danger-light);
    color: #991b1b;
    border: 1px solid #fecaca;
}

.status-message.warning {
    background: var(--accent-light);
    color: #92400e;
    border: 1px solid #fde68a;
}

.hidden { display: none !important; }

/* Source selector */
.source-selector {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.source-option {
    cursor: pointer;
}

.source-option input[type="radio"] {
    display: none;
}

.source-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    padding: 1.25rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.15s;
    text-align: center;
}

.source-card span {
    font-weight: 600;
    font-size: 0.9rem;
}

.source-card small {
    color: var(--text-light);
    font-size: 0.78rem;
}

.source-option.selected .source-card,
.source-option input:checked + .source-card {
    border-color: var(--primary);
    background: var(--primary-light);
}

/* File browser */
.file-browser {
    margin-bottom: 1rem;
}

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

.file-browser-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
}

.file-list {
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    max-height: 280px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 0.85rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.88rem;
    cursor: pointer;
    transition: background 0.1s;
}

.file-item:last-child { border-bottom: none; }
.file-item:hover { background: var(--bg); }

.file-item.selected {
    background: var(--primary-light);
}

.file-item input[type="checkbox"] {
    accent-color: var(--primary);
}

.file-icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.file-name { flex: 1; }

.file-size {
    color: var(--text-light);
    font-size: 0.8rem;
}

.file-list .loading,
.file-list .empty {
    padding: 2rem;
    text-align: center;
    color: var(--text-light);
    font-size: 0.88rem;
}

/* Validation results */
.validation-results {
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.validation-results h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
}

.validation-stat {
    display: flex;
    justify-content: space-between;
    padding: 0.3rem 0;
    font-size: 0.88rem;
}

.validation-stat .label { color: var(--text-light); }
.validation-stat .value { font-weight: 600; }

.validation-albums {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
}

.album-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.4rem;
}

.album-tag {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.78rem;
    color: var(--text-light);
}

.validation-warnings {
    margin-top: 0.75rem;
}

.validation-warning {
    background: var(--accent-light);
    color: #92400e;
    padding: 0.4rem 0.65rem;
    border-radius: 4px;
    font-size: 0.82rem;
    margin-top: 0.35rem;
}

.validation-error {
    background: var(--danger-light);
    color: #991b1b;
    padding: 0.4rem 0.65rem;
    border-radius: 4px;
    font-size: 0.82rem;
    margin-top: 0.35rem;
}

/* Options */
.options-section {
    margin-bottom: 1.25rem;
}

.options-section h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
}

.option-grid {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    cursor: pointer;
    padding: 0.3rem 0;
}

.option input[type="checkbox"] {
    accent-color: var(--primary);
}

/* Import progress */
.import-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-running {
    background: #dbeafe;
    color: #1d4ed8;
}

.badge-completed {
    background: var(--success-light);
    color: #166534;
}

.badge-failed {
    background: var(--danger-light);
    color: #991b1b;
}

.badge-cancelled {
    background: var(--accent-light);
    color: #92400e;
}

.import-timer {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.log-output {
    background: var(--log-bg);
    color: var(--log-text);
    border-radius: var(--radius-sm);
    padding: 1rem;
    height: 400px;
    overflow-y: auto;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.82rem;
    line-height: 1.6;
}

.log-output .log-placeholder {
    color: var(--text-light);
    text-align: center;
    padding-top: 4rem;
}

.log-line {
    white-space: pre-wrap;
    word-break: break-all;
}

.log-line.photobridge {
    color: var(--log-accent);
    font-weight: 600;
}

.log-line.error-line {
    color: #f87171;
}

/* Step content visibility */
.step-content {
    display: none;
}

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

/* Footer */
footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-light);
    font-size: 0.82rem;
    border-top: 1px solid var(--border);
}

.footer-sub {
    margin-top: 0.25rem;
    font-size: 0.78rem;
}

/* Drop zone */
.drop-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 2.5rem 1.5rem;
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 1rem;
}

.drop-zone p {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
}

.drop-zone span {
    font-size: 0.82rem;
    color: var(--text-light);
}

.drop-zone.dragover {
    border-color: #8B5CF6;
    background: rgba(139, 92, 246, 0.05);
}

.upload-btn {
    cursor: pointer;
}

/* Upload progress */
.upload-progress {
    margin-bottom: 1rem;
}

.progress-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.4rem;
}

.progress-fill {
    height: 100%;
    background: #8B5CF6;
    border-radius: 3px;
    transition: width 0.2s;
    width: 0%;
}

.progress-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.progress-text {
    font-size: 0.82rem;
    color: var(--text-light);
}

.btn-pause {
    background: var(--accent-light);
    color: #92400e;
    border: 1px solid #fde68a;
    font-size: 0.78rem;
    padding: 0.25rem 0.65rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

.btn-pause.btn-resume {
    background: var(--success-light);
    color: #166534;
    border-color: #bbf7d0;
}

/* Remove button */
.btn-remove {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 0.4rem;
    line-height: 1;
    border-radius: 4px;
    transition: all 0.15s;
}

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

/* Uploaded files list */
.uploaded-files-header {
    margin-bottom: 0.5rem;
}

.uploaded-files-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
}

/* Responsive */
@media (max-width: 600px) {
    .app-header { padding: 1rem; }
    .container { padding: 1rem; }
    .card { padding: 1.25rem; }
    .source-selector { grid-template-columns: 1fr; }
    .step-label { display: none; }
    .steps { gap: 0.25rem; }
    .log-output { height: 300px; }
}