/* Former — Dark Theme (Google AI Studio Match) */
:root {
    --bg-base: #131314;
    --bg-surface: #1e1f20;
    --bg-overlay: #282a2c;
    --bg-input: #1e1f20;
    --text-primary: #e3e3e3;
    --text-secondary: #c4c7c5;
    --text-subtle: #8e918f;
    --accent: #e3e3e3;
    --accent-hover: #ffffff;
    --accent-dim: rgba(227, 227, 227, 0.1);
    --success: #81c995;
    --error: #f28b82;
    --warning: #fdd663;
    --border: #444746;
    --border-light: #333638;
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 150ms ease;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Menlo', 'Consolas', monospace;
}

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

body {
    font-family: var(--font);
    background: var(--bg-base);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    -webkit-font-smoothing: antialiased;
}

#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Navigation (includes macOS titlebar drag region) */
#nav {
    display: flex;
    align-items: center;
    padding: 0 16px 0 76px; /* left padding for macOS traffic lights */
    height: 44px;
    flex-shrink: 0;
    background: var(--bg-base);
    border-bottom: 1px solid var(--border-light);
    gap: 4px;
    -webkit-app-region: drag;
    -webkit-user-select: none;
    user-select: none;
}

.nav-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
}

.nav-btn:hover {
    background: var(--bg-overlay);
    color: var(--text-primary);
}

.nav-brand {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    -webkit-app-region: no-drag;
    -webkit-user-select: none;
    user-select: none;
}

.nav-project-name {
    font-size: 13px;
    color: var(--text-subtle);
    padding-left: 8px;
    -webkit-app-region: no-drag;
}

.nav-btn {
    -webkit-app-region: no-drag;
}

.nav-spacer { flex: 1; }

/* Main content */
#main {
    flex: 1;
    overflow-y: auto;
    position: relative;
}

.page {
    display: none;
    padding: 32px 24px;
    max-width: 720px;
    margin: 0 auto;
    animation: fadeIn 200ms ease;
}

.page.active {
    display: block;
}

.page-former.active {
    display: flex;
    max-width: none;
    padding: 0;
    height: 100%;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Landing page */
#page-landing {
    position: relative;
    overflow: hidden;
}

.landing-bg-art {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
    pointer-events: none;
    z-index: 0;
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 20%, rgba(0,0,0,0.5) 100%);
    mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 20%, rgba(0,0,0,0.2) 100%);
}

.landing-bg-logo {
    width: 50%;
    height: auto;
    opacity: 0.8;
    filter: brightness(1.4);
}

.landing-hero {
    text-align: center;
    padding: 0 0 32px;
    position: relative;
    z-index: 1;
}

.landing-hero h1 {
    font-size: 32px;
    font-weight: 500;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.landing-hero p {
    color: var(--text-secondary);
    font-size: 15px;
}

.landing-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}

.action-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 24px;
    cursor: pointer;
    transition: all var(--transition);
    text-align: left;
}

.action-card:hover {
    border-color: var(--border);
    background: var(--bg-overlay);
}

.action-card h3 {
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.action-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Section titles */
.section-title {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-subtle);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

/* Recent projects */
.project-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.project-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
}

.project-item:hover {
    border-color: var(--border);
    background: var(--bg-overlay);
}

.project-name {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
}

.project-meta {
    font-size: 12px;
    color: var(--text-subtle);
}

.badge {
    font-size: 10px;
    padding: 4px 8px;
    border-radius: 6px;
    background: var(--bg-base);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

/* Dashboard grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

@media (max-width: 640px) {
    .dashboard-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Cards */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
}

.card-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 16px;
}

/* Form elements */
.form-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.form-row:last-child {
    margin-bottom: 0;
}

.form-label {
    font-size: 13px;
    color: var(--text-secondary);
    min-width: 140px;
}

.form-input {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font: inherit;
    font-size: 13px;
    padding: 8px 12px;
    outline: none;
    transition: all var(--transition);
}

.form-input:focus {
    border-color: var(--text-secondary);
    outline: 1px solid var(--text-secondary);
}

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

select.form-input {
    cursor: pointer;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-primary);
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn:hover {
    background: var(--bg-overlay);
    border-color: var(--text-secondary);
}

.btn-primary {
    background: var(--text-primary);
    border-color: var(--text-primary);
    color: var(--bg-base);
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

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

.btn-danger:hover {
    background: rgba(242, 139, 130, 0.1);
    border-color: var(--error);
}

/* File picker row */
.file-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.file-name {
    flex: 1;
    font-size: 13px;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-name.has-file {
    color: var(--text-primary);
}

/* Checkbox row */
.check-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.check-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    cursor: pointer;
}

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

/* Action bar */
.action-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
}

.action-bar .spacer {
    flex: 1;
}

/* Page header */
.page-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.page-header h2 {
    font-size: 18px;
    font-weight: 500;
}

/* Board preview canvas */
.board-canvas-wrap {
    background: var(--bg-base);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 0;
    text-align: center;
}

.board-canvas-wrap canvas {
    max-width: 100%;
    border-radius: var(--radius);
}

/* Side buttons */
.side-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.side-tab {
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.side-tab.active {
    background: var(--text-primary);
    border-color: var(--text-primary);
    color: var(--bg-base);
}

/* Cutout list */
.cutout-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 8px;
}

.cutout-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-base);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-family: var(--font-mono);
}

.cutout-item .cutout-text {
    flex: 1;
    color: var(--text-secondary);
}

/* Result page */
.result-files {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-secondary);
    background: var(--bg-base);
    border: 1px solid var(--border-light);
    padding: 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.loading-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(19, 19, 20, 0.8);
    z-index: 100;
    flex-direction: column;
    gap: 16px;
}

.loading-overlay .spinner {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

.loading-text {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

/* ===== THE FORMER ===== */
.former-container {
    display: flex;
    width: 100%;
    height: 100%;
}

.former-canvas-wrap {
    flex: 1;
    background: #000000;
    position: relative;
    overflow: hidden;
}

.former-canvas-wrap canvas {
    position: absolute;
    top: 0;
    left: 0;
}

.former-sidebar {
    width: 280px;
    background: var(--bg-base);
    border-left: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    flex-shrink: 0;
}

.former-sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.former-sidebar-header h3 {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
}

.former-layers {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.former-layer-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition);
}

.former-layer-row:hover {
    background: var(--bg-surface);
}

.former-layer-row.highlighted {
    background: var(--bg-overlay);
}

.former-layer-row.selected {
    background: var(--bg-surface);
    border-left: 2px solid var(--text-primary);
    padding-left: 8px;
}

.layer-vis-btn,
.layer-hl-btn {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: var(--radius-sm);
    background: none;
    color: var(--text-subtle);
    cursor: pointer;
    font-size: 14px;
    transition: all var(--transition);
}

.layer-vis-btn:hover,
.layer-hl-btn:hover {
    background: var(--bg-overlay);
    color: var(--text-primary);
}

.layer-vis-btn.active {
    color: var(--text-primary);
}

.layer-hl-btn.active {
    color: var(--warning);
}

.layer-swatch {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    flex-shrink: 0;
}

.layer-name {
    font-size: 13px;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.layer-name.dimmed {
    color: var(--text-subtle);
}

.former-actions {
    padding: 16px;
    border-top: 1px solid var(--border-light);
}

/* Settings panel */
.nav-settings-wrap {
    position: relative;
    -webkit-app-region: no-drag;
}

.nav-settings-btn {
    font-size: 16px;
}

.settings-panel {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 16px;
    min-width: 220px;
    z-index: 200;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.settings-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 13px;
    color: var(--text-secondary);
}

.settings-toggle-row input[type="checkbox"] {
    accent-color: var(--text-primary);
}

/* Floating action bar */
.former-floating-actions {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    backdrop-filter: blur(8px);
    background: rgba(30,31,32,0.8);
    padding: 8px 16px;
    border-radius: var(--radius);
    z-index: 10;
}

/* Z-axis joystick control */
.z-joystick {
    position: relative;
    width: 100%;
    height: 28px;
    background: var(--bg-base);
    border: 1px solid var(--border);
    border-radius: 14px;
    cursor: grab;
    touch-action: none;
    user-select: none;
    overflow: hidden;
}

.z-joystick:active {
    cursor: grabbing;
}

.z-joystick-track {
    position: absolute;
    top: 50%;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--border);
    transform: translateY(-50%);
}

.z-joystick-label-l,
.z-joystick-label-r {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 9px;
    font-weight: 600;
    color: var(--text-subtle);
    pointer-events: none;
}

.z-joystick-label-l { left: 6px; }
.z-joystick-label-r { right: 4px; }

.z-joystick-knob {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    background: var(--text-secondary);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: left 80ms ease-out, background 100ms;
    pointer-events: none;
}

.z-joystick.active .z-joystick-knob {
    background: var(--text-primary);
    transition: none;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border);
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 40px 0;
    color: var(--text-subtle);
    font-size: 14px;
}

/* Preset buttons */
.preset-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Unwrap page */
.unwrap-layout {
    display: flex;
    gap: 16px;
    height: calc(100vh - 140px);
}

.unwrap-preview {
    flex: 1;
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.unwrap-preview svg {
    max-width: 100%;
    max-height: 100%;
    background: #fff;
    border-radius: var(--radius-sm);
}

.unwrap-controls {
    width: 220px;
    flex-shrink: 0;
}

.unwrap-sidebar {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 16px;
}

/* VW camera lock button */
.sidebar-icon-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
}

.sidebar-icon-btn.locked {
    background: var(--accent-dim);
    border-color: var(--text-secondary);
    color: var(--text-primary);
}