:root {
    --color-bg: #F8FAFC;
    --color-surface: #FFFFFF;
    --color-surface-hover: #F1F5F9;
    --color-border: #E2E8F0;
    --color-text-primary: #0F172A;
    --color-text-secondary: #64748B;
    --color-accent: #3B82F6;
    --color-accent-hover: #2563EB;
    --color-danger: #EF4444;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-display: 'Outfit', system-ui, -apple-system, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    --cmd-width: 280px;
    --cmd-height-mobile: 92px;

    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-viewer-theme="dark"] {
    --color-bg: #0B0F19;
    --color-surface: #111827;
    --color-surface-hover: #1F2937;
    --color-border: #374151;
    --color-text-primary: #F9FAFB;
    --color-text-secondary: #9CA3AF;
    --color-accent: #60A5FA;
    --color-accent-hover: #3B82F6;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.5);
}

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

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

#app {
    display: flex;
    height: 100%;
    width: 100%;
    position: relative;
}

#command-bar {
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    width: var(--cmd-width);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: background-color var(--transition), border-color var(--transition);
    box-shadow: var(--shadow-sm);
}

.cmd-brand {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--color-border);
}

.cmd-brand-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

.cmd-controls {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.group-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cmd-nav {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 8px;
    border: 1px solid var(--color-border);
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.icon-btn:hover:not(:disabled) {
    background: var(--color-surface-hover);
    color: var(--color-text-primary);
}

.icon-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.nav-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 140px;
    gap: 2px;
}

#nav-count {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

#nav-title {
    font-size: 0.85rem;
    font-weight: 500;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#nav-status {
    min-height: 16px;
    font-size: 0.72rem;
    color: var(--color-text-secondary);
}

#nav-status.slow {
    color: var(--color-danger);
    font-weight: 600;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

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

.tool-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tool-row label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.label-hint {
    font-weight: 400;
    font-size: 0.7rem;
    opacity: 0.6;
    cursor: help;
    text-transform: none;
    letter-spacing: 0;
}

select {
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    outline: none;
    appearance: none;
    transition: all var(--transition);
}

select:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

#badge-dimensions {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
}

#badge-dimensions:hover {
    border-color: var(--color-accent);
    background: var(--color-surface-hover);
}

.cmd-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
}

.theme-toggle .icon-sun {
    display: block;
}

.theme-toggle .icon-moon {
    display: none;
}

[data-viewer-theme="dark"] .theme-toggle .icon-sun {
    display: none;
}

[data-viewer-theme="dark"] .theme-toggle .icon-moon {
    display: block;
}

#viewport {
    flex-grow: 1;
    position: relative;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-image:
        linear-gradient(to right, var(--color-border) 1px, transparent 1px),
        linear-gradient(to bottom, var(--color-border) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
}

#mock-screen-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 40px;
}

#mock-screen {
    position: relative;
    background: #fff;
    box-shadow: var(--shadow-lg), 0 0 0 1px var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: box-shadow var(--transition);
}

#mock-screen iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
    background: #fff;
}

.hidden {
    display: none !important;
}

.overlay-layer {
    position: absolute;
    inset: 0;
    backdrop-filter: blur(8px);
    background: rgba(15, 23, 42, 0.4);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.wizard-card {
    background: var(--color-surface);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 100%;
    border: 1px solid var(--color-border);
}

.wizard-card h2 {
    margin-bottom: 12px;
    font-family: var(--font-display);
}

.wizard-card p {
    margin-bottom: 24px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.code-block {
    background: #1E293B;
    color: #F8FAFC;
    padding: 16px;
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    overflow-x: auto;
}

.mt {
    margin-top: 24px;
}

.toast-alert {
    position: absolute;
    right: 20px;
    bottom: 20px;
    z-index: 1200;
    background: var(--color-surface);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    max-width: min(420px, calc(100vw - 40px));
    font-size: 0.9rem;
    line-height: 1.4;
}

.dim-modal-card {
    width: min(620px, calc(100vw - 24px));
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.dim-modal-card h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
}

.dim-input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.dim-input-grid label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

.dim-input-grid input {
    height: 42px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text-primary);
    padding: 0 12px;
    font-size: 0.95rem;
    outline: none;
}

.dim-input-grid input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.dim-preset-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
}

.dim-preset-grid button {
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-primary);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.82rem;
    text-align: left;
}

.dim-preset-grid button:hover {
    border-color: var(--color-accent);
    background: var(--color-surface-hover);
}

.dim-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.dim-btn {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    cursor: pointer;
    transition: all var(--transition);
    font-weight: 600;
}

.dim-btn.secondary {
    background: transparent;
    color: var(--color-text-primary);
}

.dim-btn.secondary:hover {
    background: var(--color-surface-hover);
}

.dim-btn.primary {
    border-color: var(--color-accent);
    background: var(--color-accent);
    color: #fff;
}

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

.mobile-only {
    display: none !important;
}

@media (max-width: 768px) {
    .mobile-only {
        display: flex !important;
    }
    
    #app {
        flex-direction: column-reverse;
    }

    #command-bar {
        width: 100%;
        height: auto;
        flex-direction: column;
        align-items: stretch;
        border-right: none;
        border-top: 1px solid var(--color-border);
        padding: 8px;
        gap: 8px;
    }

    .cmd-brand {
        display: none;
    }

    .cmd-controls {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 8px;
        padding: 0;
        overflow: visible;
        flex-shrink: 1;
        width: 100%;
        padding-right: 56px; /* space for the absolute theme button */
    }
    
    .cmd-tools {
        display: none; /* hidden by default on mobile */
        flex-direction: row;
        align-items: center;
        gap: 8px;
        width: 100%;
        margin-top: 4px;
        padding-bottom: 4px;
    }
    
    .cmd-tools.visible {
        display: flex;
    }
    
    .action-btn.active {
        background: var(--color-surface-hover);
        border-color: var(--color-accent);
        color: var(--color-accent);
    }
    
    .tool-row.dimensions-row {
        flex-grow: 1;
    }
    
    .tool-row select {
        width: 160px;
        min-width: 140px;
        font-size: 0.8rem;
        padding: 8px 10px;
    }
    
    #badge-dimensions {
        min-width: 100px;
        width: 100%;
        padding: 8px 10px;
        font-size: 0.8rem;
    }

    .cmd-controls::-webkit-scrollbar {
        display: none;
    }

    .group-section {
        flex-direction: row;
        align-items: center;
        gap: 8px;
    }

    .cmd-nav {
        background: transparent;
        border: none;
        padding: 0;
        gap: 4px;
    }

    .nav-indicator {
        display: none;
    }

    .action-btn {
        padding: 10px;
        border-radius: 10px;
        min-width: 44px;
        justify-content: center;
    }

    .action-btn {
        padding: 10px;
        border-radius: 10px;
        min-width: 44px;
        justify-content: center;
    }
    
    .cmd-actions .action-btn span {
        display: none;
    }

    .tool-row {
        flex-direction: row;
        align-items: center;
        gap: 6px;
    }

    .tool-row label {
        display: none;
    }

    .cmd-footer {
        position: absolute;
        top: 8px;
        right: 8px;
        display: flex;
        padding: 0;
        border-top: none;
        border-left: none;
        height: 44px;
        align-items: center;
        justify-content: center;
        background: var(--color-surface);
        border-radius: var(--radius-sm);
    }

    .dim-modal-card {
        width: calc(100vw - 12px);
        height: auto;
        border-radius: 12px;
    }

    .dim-preset-grid {
        grid-template-columns: 1fr 1fr;
    }
}