/* ==========================================================================
   PnPTools shared UI — canonical stylesheet
   This file (css/style.css in the hub) is copied verbatim into every tool
   by scripts/sync-shared.sh. Tool-specific rules live in each tool's
   css/tool.css. Edit only the hub copy.
   Themes: dark by default; light when the OS prefers it (unless the user
   picked dark) or when <html data-theme="light"> is set.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;600;700&display=swap');

:root {
    color-scheme: dark;
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface2: #242836;
    --border: #2e3344;
    --accent: #6c8cff;
    --accent-hover: #8aa4ff;
    --text: #e4e6f0;
    --text-dim: #8b8fa8;
    --text-muted: #8b8fa8;
    --danger: #ff6b6b;
    --success: #51cf66;
    --info: #6c8cff;
    --warning: #ffcc66;
    --checker: #2e3344;
    --overlay: rgba(15, 17, 23, 0.85);
    --shadow: rgba(0, 0, 0, 0.45);
    --radius: 10px;
    --radius-lg: 10px;
}

@media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
        color-scheme: light;
        --bg: #f3f4f8;
        --surface: #ffffff;
        --surface2: #eceef5;
        --border: #d6d9e4;
        --accent: #3f5fe8;
        --accent-hover: #2d4bd0;
        --text: #1b1f2b;
        --text-dim: #585e74;
        --text-muted: #585e74;
        --danger: #d6334a;
        --success: #2b8a3e;
        --info: #3f5fe8;
        --warning: #a8670a;
        --checker: #dcdfe8;
        --overlay: rgba(243, 244, 248, 0.88);
        --shadow: rgba(30, 36, 60, 0.14);
    }
}

:root[data-theme="light"] {
    color-scheme: light;
    --bg: #f3f4f8;
    --surface: #ffffff;
    --surface2: #eceef5;
    --border: #d6d9e4;
    --accent: #3f5fe8;
    --accent-hover: #2d4bd0;
    --text: #1b1f2b;
    --text-dim: #585e74;
    --text-muted: #585e74;
    --danger: #d6334a;
    --success: #2b8a3e;
    --info: #3f5fe8;
    --warning: #a8670a;
    --checker: #dcdfe8;
    --overlay: rgba(243, 244, 248, 0.88);
    --shadow: rgba(30, 36, 60, 0.14);
}

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

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    background: var(--bg);
    min-height: 100vh;
    color: var(--text);
}

a {
    color: inherit;
}

/* ---- Shell ------------------------------------------------------------- */

.container {
    max-width: none;
    margin: 0;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    overflow: visible;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: var(--surface);
    color: var(--text);
    padding: 18px 32px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

header .subtitle {
    font-size: 0.85rem;
    color: var(--text-dim);
    opacity: 1;
    max-width: none;
    margin: 0;
}

/* ---- Layout: sidebar + main -------------------------------------------- */

.content {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 0;
    padding: 0;
    flex: 1;
    min-height: 0;
    min-width: 0;
}

.content.with-gallery {
    grid-template-columns: 340px 1fr 260px;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 20px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    min-width: 0;
    overflow-y: auto;
}

.gallery-sidebar {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    background: var(--surface);
    border-left: 1px solid var(--border);
    min-width: 0;
    overflow-y: auto;
}

.main {
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-width: 0;
    padding: 28px;
    overflow: auto;
    background: var(--bg);
}

/* ---- Panels (grouped controls within the sidebar) ---------------------- */

.panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}

.panel-title {
    position: relative;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ---- Help tooltip (a "?" mark that reveals a longer note on hover/focus) - */
/* Positioned relative to .panel-title (not the small icon itself) and pinned
   to its full width, so it always opens downward and never overflows past
   the sidebar's edge regardless of where the icon sits in the title. */

.help {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    margin-left: 6px;
    border-radius: 50%;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 10px;
    font-weight: 700;
    text-transform: none;
    letter-spacing: normal;
    cursor: help;
    vertical-align: middle;
}

.help:hover,
.help:focus-visible {
    border-color: var(--accent);
    color: var(--accent);
    outline: none;
}

.help::after {
    content: attr(data-tip);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 6px;
    background: var(--surface2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    font-size: 11px;
    font-weight: 400;
    line-height: 1.4;
    text-align: left;
    white-space: normal;
    box-shadow: 0 8px 20px var(--shadow);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s;
    z-index: 30;
}

.help:hover::after,
.help:focus-visible::after {
    opacity: 1;
    visibility: visible;
}

/* ---- Form controls ------------------------------------------------------ */

.control-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.control-group[hidden] {
    display: none;
}

.control-group label {
    font-weight: 500;
    color: var(--text-dim);
    font-size: 0.78rem;
    text-transform: none;
    letter-spacing: normal;
}

.control-group label.inline {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
    font-size: 0.85rem;
    cursor: pointer;
}

.row {
    display: flex;
    gap: 10px;
}

.row > * {
    flex: 1;
}

/* .row sets display, which would override the hidden attribute */
.row[hidden] {
    display: none;
}

input[type="file"],
input[type="number"],
input[type="text"],
select {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.88rem;
    font-family: inherit;
    color: var(--text);
    background: var(--surface);
    transition: border-color 0.2s;
    outline: none;
}

input[type="file"] {
    padding: 8px;
    cursor: pointer;
}

input[type="number"]:focus,
input[type="text"]:focus,
input[type="file"]:focus,
select:focus {
    border-color: var(--accent);
}

input[type="number"]:hover,
input[type="text"]:hover,
input[type="file"]:hover,
select:hover {
    border-color: var(--accent);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='%238b8fa8'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 30px;
}

input[type="checkbox"],
input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--accent);
}

input[type="color"] {
    width: 100%;
    height: 40px;
    padding: 2px;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    background: var(--surface);
}

.input-hint {
    font-size: 12px;
    color: var(--text-muted);
}

.radio-group,
.checkbox-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.radio-group.stacked,
.checkbox-group.stacked {
    grid-template-columns: 1fr;
}

.radio-group label,
.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text);
    text-transform: none;
    letter-spacing: normal;
    cursor: pointer;
}

.slider-field {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 10px;
}

.slider-field label {
    grid-column: 1 / -1;
}

.slider-field output {
    font-variant-numeric: tabular-nums;
    font-size: 13px;
    color: var(--text-dim);
    text-align: right;
    min-width: 3em;
}

/* ---- Dropzone ------------------------------------------------------------ */

.dropzone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-dim);
    font-size: 0.85rem;
}

.dropzone:hover,
.dropzone.dragover {
    border-color: var(--accent);
    background: rgba(108, 140, 255, 0.06);
}

.dropzone.dropzone-compact {
    padding: 12px 10px;
    margin-bottom: 8px;
}

.dropzone input[type="file"] {
    display: none;
}

.dropzone .dz-title {
    font-weight: 500;
    color: var(--text);
    margin-bottom: 4px;
}

.dropzone-count {
    text-align: center;
    font-size: 12px;
    color: var(--text-dim);
}

/* ---- Buttons -------------------------------------------------------------- */

.button-group {
    display: flex;
    gap: 10px;
    flex-direction: column;
}

button,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, filter 0.2s;
    text-transform: none;
    letter-spacing: normal;
    text-decoration: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent);
    color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--surface2);
    border-color: var(--accent);
}

.btn-success {
    background: var(--success);
    color: #111111;
}

.btn-success:hover:not(:disabled) {
    filter: brightness(1.1);
}

button:disabled,
.btn:disabled,
.btn[aria-disabled="true"] {
    background: var(--border);
    color: var(--text-dim);
    opacity: 1;
    cursor: not-allowed;
}

.btn-small {
    padding: 8px 12px;
    font-size: 12px;
}

/* ---- Status / feedback ------------------------------------------------- */

.status {
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 12px;
    text-align: center;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text-dim);
}

.status.info { color: var(--accent); border-color: rgba(108, 140, 255, 0.3); background: rgba(108, 140, 255, 0.08); }
.status.success { color: var(--success); border-color: rgba(81, 207, 102, 0.3); background: rgba(81, 207, 102, 0.08); }
.status.error { color: var(--danger); border-color: rgba(255, 107, 107, 0.3); background: rgba(255, 107, 107, 0.08); }
.status.processing { color: var(--warning); border-color: rgba(255, 204, 102, 0.3); background: rgba(255, 204, 102, 0.08); }
.status:empty { display: none; }

/* ---- Preview / canvas areas --------------------------------------------- */

.preview-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
}

.preview-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.preview-canvas-container,
.canvas-container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    min-height: 300px;
    overflow: auto;
}

.preview-canvas-container canvas,
.canvas-container canvas,
.preview-canvas {
    max-width: 100%;
    max-height: 100%;
    border-radius: 4px;
    box-shadow: 0 4px 24px var(--shadow);
    background:
        linear-gradient(45deg, var(--checker) 25%, transparent 25%),
        linear-gradient(-45deg, var(--checker) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--checker) 75%),
        linear-gradient(-45deg, transparent 75%, var(--checker) 75%);
    background-color: var(--surface);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0;
}

.comparison-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    min-width: 0;
    max-width: 100%;
    width: 100%;
}

.comparison-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 0;
    max-width: 100%;
}

.comparison-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-dim);
}

/* ---- Thumbnails / gallery ------------------------------------------------ */

.thumbnails-container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    overflow-x: auto;
    overflow-y: hidden;
    display: flex;
    gap: 10px;
    min-height: 120px;
}

.thumbnail {
    position: relative;
    flex-shrink: 0;
    width: 100px;
    height: 100px;
    border: 2px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.2s;
    background: var(--surface2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.thumbnail img,
.thumbnail canvas {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--surface2);
}

.thumbnail.active {
    border-color: var(--accent);
}

.thumbnail:hover {
    border-color: var(--accent);
}

.thumbnail .badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    line-height: 18px;
    text-align: center;
    font-size: 11px;
    cursor: pointer;
    color: var(--text);
}

.gallery {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.gallery-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
}

/* ---- Info grid ------------------------------------------------------------ */

.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    background: var(--surface2);
    border: 1px solid var(--border);
    padding: 12px;
    border-radius: var(--radius);
    font-size: 12px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-label {
    color: var(--text-dim);
    font-weight: 600;
}

.info-value {
    color: var(--text);
    font-weight: 500;
}

/* ---- Empty state ----------------------------------------------------------- */

.empty-state {
    text-align: center;
    color: var(--text-dim);
    padding: 40px 20px;
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

/* ---- Downloads --------------------------------------------------------------- */

.download-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.download-link {
    flex: 1;
    min-width: 200px;
    display: none;
}

.download-link.show {
    display: inline-flex;
}

/* ---- File list chip ------------------------------------------------------------ */

.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--text);
}

.file-info .name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-info .remove {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 13px;
    padding: 2px 6px;
    text-transform: none;
    letter-spacing: normal;
}

/* ---- Loading spinner -------------------------------------------------------------- */

.loading {
    display: inline-block;
    width: 12px;
    height: 12px;
    border: 2px solid var(--border);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 0.6s linear infinite;
}

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

.loading-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
    z-index: 1000;
    color: var(--text-dim);
}

.loading-overlay[hidden],
.loading-overlay.hidden {
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ---- Scrollbars ----------------------------------------------------------------- */

.thumbnails-container::-webkit-scrollbar,
.sidebar::-webkit-scrollbar,
.gallery-sidebar::-webkit-scrollbar,
.main::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.thumbnails-container::-webkit-scrollbar-track,
.sidebar::-webkit-scrollbar-track,
.gallery-sidebar::-webkit-scrollbar-track,
.main::-webkit-scrollbar-track {
    background: transparent;
}

.thumbnails-container::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb,
.gallery-sidebar::-webkit-scrollbar-thumb,
.main::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.thumbnails-container::-webkit-scrollbar-thumb:hover,
.sidebar::-webkit-scrollbar-thumb:hover,
.gallery-sidebar::-webkit-scrollbar-thumb:hover,
.main::-webkit-scrollbar-thumb:hover {
    background: var(--text-dim);
}

/* ---- Responsive ------------------------------------------------------------------- */

@media (max-width: 1024px) {
    .content,
    .content.with-gallery {
        grid-template-columns: 1fr;
    }

    .sidebar {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .gallery-sidebar {
        border-left: none;
        border-top: 1px solid var(--border);
    }

    .comparison-container {
        grid-template-columns: 1fr;
    }

    .row {
        flex-direction: column;
    }

    .radio-group,
    .checkbox-group {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    header h1 { font-size: 1.2rem; }
    .main { padding: 16px; }
    .sidebar, .gallery-sidebar { padding: 16px; }
}