/* UI Design System: "Brillance" Aesthetic */

:root {
    /* Color Palette - Warm Paper Tone */
    --ui-bg-page: #fdfcfa;
    --ui-bg-surface: #f7f4ef;
    --ui-bg-panel: #fdfcfa;
    --ui-bg-toolbar: #f7f2ea;

    --ui-fg-primary: #2f2a25;
    --ui-fg-secondary: #7b7268;
    --ui-fg-muted: #a89f94;
    --ui-fg-on-accent: #ffffff;

    --ui-border-light: #e2ddd5;
    --ui-border-hover: #d8cfc2;

    --ui-accent: #9b6e46;
    --ui-accent-hover: #7d5835;

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-pill: 9999px;

    --font-ui-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-ui-serif: 'Source Serif 4', serif;

    --shadow-sm: 0 1px 3px rgba(60, 40, 20, 0.06);
    --shadow-md: 0 4px 8px rgba(60, 40, 20, 0.08), 0 1px 3px rgba(60, 40, 20, 0.04);
    --shadow-lg: 0 10px 20px rgba(60, 40, 20, 0.1), 0 3px 6px rgba(60, 40, 20, 0.06);
}

body {
    font-family: var(--font-ui-sans);
    color: var(--ui-fg-primary);
    background-color: var(--ui-bg-page);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1,
h2,
h3,
h4,
.brand {
    font-family: var(--font-ui-serif);
}

/* Buttons */
.btn {
    border-radius: 6px;
    font-weight: 500;
    text-transform: none;
    font-family: var(--font-ui-sans);
    letter-spacing: 0.01em;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.8125rem;
    padding: 0 0.85rem;
    height: 32px;
    min-height: 32px;
    line-height: 32px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn-primary {
    background-color: var(--ui-accent);
    border-color: var(--ui-accent);
    color: var(--ui-fg-on-accent);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--ui-accent-hover);
    border-color: var(--ui-accent-hover);
    transform: translateY(-0.5px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-outline {
    border: 1px solid var(--ui-border-hover);
    color: var(--ui-fg-primary);
    background: var(--ui-bg-panel);
    box-shadow: var(--shadow-sm);
}

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

.btn-outline:active {
    transform: translateY(0);
    background-color: var(--ui-bg-toolbar);
}

.btn-ghost {
    color: var(--ui-fg-secondary);
    background: transparent;
    box-shadow: none;
    border-color: transparent;
}

.btn-ghost:hover {
    background-color: var(--ui-bg-surface);
    color: var(--ui-fg-primary);
}

/* Icon baseline: avoid default 300x150 SVG boxes intercepting clicks. */
.ui-icon {
    width: 1rem;
    height: 1rem;
    display: block;
    flex-shrink: 0;
    pointer-events: none;
}

/* Keep top toolbar button icons constrained and non-interactive. */
#editor-pane>.toolbar .btn>svg.ui-icon {
    width: 16px;
    height: 16px;
    pointer-events: none;
}

/* Use consistent line icons for top toolbar/import/export controls. */
#editor-pane>.toolbar .btn>svg.ui-icon,
#preview-pane>.toolbar .btn>svg.ui-icon,
#editor-pane>.toolbar .dropdown-content svg.ui-icon,
#preview-pane>.toolbar .dropdown-content svg.ui-icon {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.9;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Toolbar & Layout */
.toolbar {
    height: 56px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    background: rgba(253, 252, 250, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--ui-border-light);
    position: sticky;
    top: 0;
    z-index: var(--z-top-toolbar, 60);
}

#editor-pane .toolbar {
    border-right: 1px solid var(--ui-border-light);
}

.brand {
    font-family: var(--font-ui-serif);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--ui-fg-primary);
    letter-spacing: -0.02em;
}

/* Inputs & Forms */
.input,
.select,
.textarea {
    background-color: var(--ui-bg-panel);
    border: 1px solid var(--ui-border-light);
    border-radius: 6px;
    color: var(--ui-fg-primary);
    font-family: var(--font-ui-sans);
    transition: all 0.2s;
    font-size: 0.8125rem;
    box-shadow: none;
}

.input:focus,
.select:focus,
.textarea:focus {
    outline: none;
    border-color: var(--ui-accent);
    box-shadow: 0 0 0 2px rgba(155, 110, 70, 0.12);
}

/* Panels */
#design-pane {
    background-color: var(--ui-bg-surface);
    border-right: 1px solid var(--ui-border-light);
}

/* --- Premium Segmented Controls (Sliders) --- */
.toggle-slider-container {
    position: relative;
    display: inline-flex;
    cursor: pointer;
    user-select: none;
    margin-right: 0.75rem;
}

.toggle-slider-container input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.toggle-slider {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    --toggle-pad: 3px;
    width: auto;
    min-width: 140px;
    height: 34px;
    background-color: var(--ui-bg-surface);
    border: 1px solid var(--ui-border-light);
    border-radius: 8px;
    padding: var(--toggle-pad);
    transition: all 0.3s ease;
    box-shadow: inset 0 1px 2px rgba(60, 40, 20, 0.05);
}

.toggle-slider span {
    z-index: 10;
    flex: 1;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--ui-fg-muted);
    transition: color 0.3s;
    line-height: 28px;
    padding: 0 0.65rem;
}

.toggle-slider .knob {
    position: absolute;
    top: 50%;
    left: var(--toggle-pad);
    width: calc(50% - var(--toggle-pad));
    height: calc(100% - (var(--toggle-pad) * 2));
    background-color: white;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(60, 40, 20, 0.1), 0 1px 2px rgba(60, 40, 20, 0.06);
    transition: transform 0.25s cubic-bezier(0.2, 0, 0.2, 1);
    z-index: 5;
    border: 1px solid rgba(60, 40, 20, 0.06);
    transform: translate(0, -50%);
}

/* Active State Logic */
.toggle-slider-container input:checked+.toggle-slider .knob {
    transform: translate(100%, -50%);
}

/* Text Colors */
/* Unchecked (Left is active) */
.toggle-slider-container input:not(:checked)+.toggle-slider .label-left {
    color: var(--ui-fg-primary);
    font-weight: 600;
}

.toggle-slider-container input:not(:checked)+.toggle-slider .label-right {
    color: var(--ui-fg-muted);
}

/* Checked (Right is active) */
.toggle-slider-container input:checked+.toggle-slider .label-left {
    color: var(--ui-fg-muted);
}

.toggle-slider-container input:checked+.toggle-slider .label-right {
    color: var(--ui-fg-primary);
    font-weight: 600;
}


/* Dropdowns - Full Behavior (DaisyUI dropdown module missing from bundle) */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    margin-top: 0.4rem;
    background-color: var(--ui-bg-panel);
    border: 1px solid var(--ui-border-light);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    padding: 0.375rem;
    min-width: 12rem;
    transform: translateY(-4px) scale(0.98);
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
    z-index: var(--z-dropdown, 80);
}

.dropdown-end .dropdown-content {
    right: 0;
}

/* Show on focus-within (click the tabindex trigger) */
.dropdown:focus-within>.dropdown-content {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}

/* Menu items inside dropdown */
.dropdown-content li a,
.dropdown-content li button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--ui-fg-primary);
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.15s;
    white-space: nowrap;
}

.dropdown-content li a:hover,
.dropdown-content li button:hover {
    background-color: var(--ui-bg-surface);
    color: var(--ui-accent);
}

.dropdown-content .divider {
    margin: 0.25rem 0;
    height: 1px;
    background-color: var(--ui-border-light);
}