/* ==========================================================================
   Feliz-KAG Prompt Optimizer - Enterprise Light UI
   ========================================================================== */

:root {
    --bg-page: #f5f7fb;
    --bg-panel: #ffffff;
    --bg-subtle: #f3f6fb;
    --bg-accent: #eaf3ff;
    --bg-code: #f7f9fc;

    --text-primary: #1f2a37;
    --text-secondary: #556072;
    --text-muted: #8a94a6;

    --primary: #2f6ee5;
    --primary-strong: #245bd1;
    --primary-soft: #e6f0ff;
    --success: #1ea97c;
    --warning: #f2a13d;
    --danger: #e25555;

    --border-color: #e5eaf1;
    --border-strong: #d7deea;

    --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.05);
    --shadow-sm: 0 4px 12px rgba(16, 24, 40, 0.08);
    --shadow-md: 0 10px 24px rgba(16, 24, 40, 0.12);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;

    --font-sans: "Source Sans 3", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-mono: "JetBrains Mono", "Fira Code", monospace;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(1200px 600px at 15% -10%, rgba(46, 110, 229, 0.08), transparent 55%),
        radial-gradient(900px 480px at 95% 0%, rgba(46, 110, 229, 0.05), transparent 50%),
        linear-gradient(180deg, #f8faff 0%, #f5f7fb 100%);
    pointer-events: none;
    z-index: -1;
}

.app-shell {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-radius: var(--radius-lg);
    background: #e9f2ff;
    border: 1px solid #d8e7ff;
    box-shadow: var(--shadow-xs);
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.brand-icon {
    font-size: 2rem;
}

.brand-text h1 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.2px;
}

.brand-text p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.auth-bar {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid #d8e7ff;
}

.auth-status {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.auth-btn {
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid var(--border-strong);
    background: #ffffff;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

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

.module-tabs {
    display: flex;
    gap: 10px;
    padding: 8px 10px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
}

.module-tab {
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 8px 14px;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.module-tab:hover {
    color: var(--text-primary);
    background: var(--bg-subtle);
}

.module-tab.active {
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary) 0%, #4c86ef 100%);
    box-shadow: var(--shadow-xs);
}

.module-tab.is-disabled {
    color: var(--text-muted);
    background: transparent;
    cursor: not-allowed;
}

.main-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--space-lg);
    flex: 1;
}

.side-panel,
.content-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.card {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-xs);
}

.panel-card {
    padding: var(--space-lg);
}

.card-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-title .icon {
    font-size: 1.1rem;
}

.card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.card-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.stage-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px 12px;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.checkbox-label:hover {
    border-color: var(--primary);
}

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

.checkbox-label input[type="checkbox"]:checked + span {
    color: var(--primary);
    font-weight: 600;
}

.requirement-input {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    line-height: 1.7;
    resize: vertical;
    transition: all 0.2s ease;
}

.requirement-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(47, 110, 229, 0.15);
}

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

.upload-zone {
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-md);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    cursor: pointer;
    background: var(--bg-subtle);
    transition: all 0.2s ease;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--primary);
    background: var(--primary-soft);
}

.upload-icon {
    font-size: 2.2rem;
    margin-bottom: var(--space-sm);
    opacity: 0.7;
}

.upload-text {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.upload-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.file-list {
    margin-top: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--bg-subtle);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.file-item .file-name {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
}

.file-item .remove-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.file-item .remove-btn:hover {
    color: var(--danger);
    background: rgba(226, 85, 85, 0.1);
}

.optimize-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px 18px;
    background: linear-gradient(135deg, var(--primary) 0%, #4c86ef 100%);
    border: none;
    border-radius: 999px;
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-xs);
}

.optimize-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.optimize-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
}

.optimize-btn.loading {
    pointer-events: none;
}

.optimize-btn.loading .btn-text {
    opacity: 0.7;
}

.progress-section,
.result-section {
    animation: fadeIn 0.3s ease-out;
}

.progress-bar-container {
    position: relative;
    height: 8px;
    background: var(--bg-subtle);
    border-radius: 999px;
    margin: var(--space-md) 0 var(--space-lg);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary) 0%, #4c86ef 100%);
    border-radius: 999px;
    transition: width 0.5s ease;
}

.progress-text {
    position: absolute;
    right: 0;
    top: -22px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stage-indicators {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.stage-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-subtle);
}

.stage-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid var(--border-strong);
    transition: all 0.2s ease;
}

.stage-indicator.active {
    border-color: rgba(47, 110, 229, 0.4);
    background: var(--primary-soft);
}

.stage-indicator.active .stage-dot {
    background: var(--primary);
    border-color: var(--primary);
}

.stage-indicator.completed .stage-dot {
    background: var(--success);
    border-color: var(--success);
}

.stage-indicator span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stage-connector {
    display: none;
}

.log-container {
    background: var(--bg-code);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border: 1px solid var(--border-color);
    max-height: 220px;
    overflow-y: auto;
}

.log-output {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.log-output .log-line {
    padding: 6px 0;
    border-bottom: 1px solid var(--border-color);
}

.log-output .log-line:last-child {
    border-bottom: none;
}

.log-output .log-success {
    color: var(--success);
}

.log-output .log-error {
    color: var(--danger);
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 8px 12px;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.result-tabs {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
    padding: 6px;
    border-radius: var(--radius-md);
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
}

.tab-btn {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 999px;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: #ffffff;
    border-color: var(--border-color);
}

.tab-btn.active {
    color: var(--primary);
    background: #ffffff;
    border-color: var(--primary);
    font-weight: 600;
}

.prompt-display {
    display: grid;
    gap: var(--space-md);
}

.prompt-section {
    background: var(--bg-code);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.prompt-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: #f0f4fb;
    border-bottom: 1px solid var(--border-color);
}

.prompt-header h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 4px 8px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.copy-btn.copied {
    border-color: var(--success);
    color: var(--success);
}

.prompt-content {
    padding: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 400px;
    overflow-y: auto;
}

.publish-panel {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-subtle);
}

.publish-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.publish-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.publish-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary) 0%, #4c86ef 100%);
    color: #ffffff;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.publish-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.publish-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.publish-row {
    display: grid;
    grid-template-columns: 90px 1fr auto auto;
    align-items: center;
    gap: var(--space-sm);
}

.publish-row label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.publish-row input {
    padding: 8px 12px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
}

.publish-row input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(47, 110, 229, 0.15);
}

.publish-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.link-btn {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 0.8rem;
}

.stage-name-list {
    display: grid;
    gap: var(--space-sm);
}

.stage-name-item {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: var(--space-sm);
    align-items: center;
}

.stage-name-item label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stage-name-item input {
    padding: 8px 12px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.35);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1100;
}

.modal.show {
    display: flex;
}

.modal-content {
    width: min(520px, 90vw);
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
}

.modal-content h3 {
    margin-bottom: var(--space-sm);
    font-size: 1rem;
}

.modal-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

.modal-list {
    max-height: 240px;
    overflow-y: auto;
    background: var(--bg-code);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.modal-item {
    padding: var(--space-xs) 0;
    border-bottom: 1px solid var(--border-color);
}

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

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
}

.modal-btn {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: #ffffff;
    color: var(--text-primary);
    cursor: pointer;
}

.modal-btn.confirm {
    border: none;
    background: linear-gradient(135deg, var(--primary) 0%, #4c86ef 100%);
    color: #ffffff;
}

.modal-btn.cancel:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.footer {
    text-align: center;
    padding: var(--space-lg) 0 var(--space-md);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 16px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    box-shadow: var(--shadow-md);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-color: rgba(30, 169, 124, 0.5);
}

.toast.error {
    border-color: rgba(226, 85, 85, 0.5);
}

.pending-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1200;
}

.pending-overlay.show {
    display: flex;
}

.pending-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 16px 20px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.pending-text {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.pending-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-strong);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

@media (max-width: 1024px) {
    .main-grid {
        grid-template-columns: 1fr;
    }

    .module-tabs {
        flex-wrap: wrap;
    }
}

@media (max-width: 720px) {
    .topbar {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .publish-row {
        grid-template-columns: 1fr;
        justify-items: start;
    }

    .stage-name-item {
        grid-template-columns: 1fr;
    }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

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

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: #eaf0f7;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb {
    background: #cdd7e6;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #b9c6db;
}