:root {
    --bg: #1a1b1e;
    --bg-elevated: #222327;
    --card-bg: #2a2b30;
    --card-bg-hover: #32333a;
    --text: #e8e9ed;
    --text-secondary: #a0a3ab;
    --text-muted: #6b6e78;
    --primary: #89b5a8;
    --primary-hover: #76a396;
    --primary-subtle: rgba(137, 181, 168, 0.1);
    --success: #4ade80;
    --success-subtle: rgba(74, 222, 128, 0.1);
    --error: #f87171;
    --error-subtle: rgba(248, 113, 113, 0.08);
    --border: #3a3b42;
    --border-light: #2e2f35;
    --input-bg: #1e1f23;
    --radius: 10px;
    --radius-lg: 14px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.35);
    --transition: 0.2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.app {
    min-height: 100vh;
}

.container {
    max-width: 680px;
    margin: 0 auto;
    padding: 32px 20px;
}

/* Top bar */
.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
}

.top-bar h1 {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.actions {
    display: flex;
    gap: 8px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    color: white;
    letter-spacing: 0.01em;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--primary);
    box-shadow: 0 2px 8px rgba(108, 138, 255, 0.25);
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(108, 138, 255, 0.35);
}

.btn-sm {
    padding: 7px 14px;
    font-size: 0.82rem;
    font-weight: 500;
    background: var(--card-bg);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-sm:hover {
    background: var(--card-bg-hover);
    color: var(--text);
    border-color: #4a4b52;
}

.btn-microsoft {
    background: #3b3c42;
    margin-top: 20px;
    width: 100%;
    padding: 12px 22px;
    border: 1px solid var(--border);
}

.btn-microsoft:hover {
    background: #45464e;
    border-color: #55565e;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 28px;
    margin-bottom: 16px;
    border: 1px solid var(--border-light);
}

.card h2 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.65;
}

.success-card {
    border-left: 3px solid var(--success);
    background: linear-gradient(135deg, var(--card-bg), rgba(74, 222, 128, 0.03));
}

.success-card h2 {
    color: var(--success);
    margin-bottom: 6px;
}

.success-card p {
    margin-bottom: 20px;
}

/* Forms */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 11px 14px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--text);
    transition: all var(--transition);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236b6e78' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-group select option {
    background: var(--card-bg);
    color: var(--text);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-subtle);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-muted);
    font-size: 0.78rem;
}

.form-group code {
    background: var(--input-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.82rem;
    color: var(--primary);
}

.hint {
    color: var(--text-muted);
    font-size: 0.82rem;
    margin-bottom: 18px;
}

/* Field categories */
.field-category {
    margin-top: 24px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.field-category:first-child {
    margin-top: 0;
}

.category-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text);
}

/* Provider selection */
.provider-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 8px;
}

.provider-option {
    cursor: pointer;
}

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

.provider-card {
    padding: 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    transition: all var(--transition);
    background: var(--input-bg);
}

.provider-card:hover {
    border-color: #4a4b52;
}

.provider-card strong {
    display: block;
    margin-bottom: 2px;
    color: var(--text);
    font-size: 0.95rem;
}

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

.provider-option input:checked + .provider-card {
    border-color: var(--primary);
    background: var(--primary-subtle);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 18px;
    font-size: 0.85rem;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}

.breadcrumb a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.breadcrumb .sep {
    color: var(--text-muted);
}

.breadcrumb .current {
    color: var(--text);
    font-weight: 600;
}

/* File list */
.file-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: var(--card-bg);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    transition: all var(--transition);
    border: 1px solid transparent;
}

.file-item:hover {
    background: var(--card-bg-hover);
    border-color: var(--border);
    transform: translateX(2px);
}

.file-item .icon {
    font-size: 1.2rem;
    flex-shrink: 0;
    opacity: 0.8;
}

.file-item .name {
    flex: 1;
    font-weight: 500;
    font-size: 0.92rem;
}

.file-item .badge {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg);
    padding: 3px 10px;
    border-radius: 20px;
    border: 1px solid var(--border-light);
    font-weight: 500;
}

.file-item.folder .icon {
    color: #f0c050;
}

.file-item.document .icon {
    color: var(--primary);
}

.empty {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Recent section */
.recent-section {
    margin-top: 36px;
}

.recent-section h3 {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
    margin-bottom: 12px;
}

.recent-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    font-size: 0.88rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
}

.recent-item:last-child {
    border-bottom: none;
}

.recent-item .icon {
    opacity: 0.5;
}

.recent-item .time {
    margin-left: auto;
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* Bundle selection */
.bundle-check {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
    flex-shrink: 0;
}

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

.bundle-mode .file-item.document {
    cursor: pointer;
}

.bundle-mode .file-item.document.selected {
    background: var(--primary-subtle);
    border-color: rgba(108, 138, 255, 0.3);
}

.bundle-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    margin-top: 8px;
    background: var(--primary-subtle);
    border: 1px solid rgba(108, 138, 255, 0.25);
    border-radius: var(--radius);
}

.bundle-bar span {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--primary);
    flex: 1;
}

.bundle-bar button:disabled {
    opacity: 0.4;
    pointer-events: none;
}

/* Generate buttons */
.generate-buttons {
    display: flex;
    gap: 10px;
}

.generate-buttons .btn {
    flex: 1;
}

.btn-secondary {
    background: var(--card-bg-hover);
    border: 1px solid var(--border);
    color: var(--text);
}

.btn-secondary:hover {
    background: #3a3b42;
    border-color: #4a4b52;
}

/* Fill form */
.fill-card {
    margin-top: 8px;
}

/* Download area */
.download-area {
    margin-top: 20px;
    padding: 18px;
    background: var(--success-subtle);
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid rgba(74, 222, 128, 0.15);
}

.download-link {
    color: var(--success);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: color var(--transition);
}

.download-link:hover {
    color: #6ee7a0;
    text-decoration: underline;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 0.88rem;
}

.alert.error {
    background: var(--error-subtle);
    color: var(--error);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

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

/* Empty state */
.empty-state {
    text-align: center;
    padding: 80px 24px;
}

.empty-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    opacity: 0.2;
}

.empty-state h2 {
    margin-bottom: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 340px;
    margin-left: auto;
    margin-right: auto;
    font-size: 0.9rem;
    line-height: 1.65;
}

/* Settings */
.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.88rem;
    transition: color var(--transition);
}

.back-link:hover {
    color: var(--text);
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    font-weight: 500;
    font-size: 0.92rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.connection-status.connected .status-dot {
    background: var(--success);
    box-shadow: 0 0 8px rgba(74, 222, 128, 0.4);
}

.info-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
}

.info-table td {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.88rem;
}

.info-table td:first-child {
    color: var(--text-muted);
    width: 120px;
    font-weight: 500;
}

.success-text {
    color: var(--success);
    font-weight: 500;
    margin-top: 14px;
    font-size: 0.9rem;
}

/* Sync spinner */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-sm.syncing {
    animation: spin 1s linear infinite;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #4a4b52;
}