/* Theme tokens */
:root {
    --bg: #0a0a0a;
    --bg-elev: #0a0a0a;
    --bg-soft: #050505;
    --fg: #e0e0e0;
    --fg-strong: #ffffff;
    --fg-muted: #888;
    --fg-faint: #555;
    --fg-fainter: #444;
    --fg-fading: #333;
    --border: #141414;
    --border-strong: #1a1a1a;
    --hover: #111;
    --grid-line: rgba(255, 255, 255, 0.05);
    --shadow: rgba(0, 0, 0, 0.5);
    --selection-outline: #ffffff;
    --workspace-glow: rgba(255, 255, 255, 0.015);
    --tool-hover-bg: #ffffff;
    --tool-hover-fg: #0a0a0a;
}

[data-theme="light"] {
    --bg: #f5f5f3;
    --bg-elev: #ffffff;
    --bg-soft: #ececea;
    --fg: #1a1a1a;
    --fg-strong: #000000;
    --fg-muted: #555;
    --fg-faint: #888;
    --fg-fainter: #aaa;
    --fg-fading: #c4c4c4;
    --border: #e2e2e0;
    --border-strong: #d0d0ce;
    --hover: #ececea;
    --grid-line: rgba(0, 0, 0, 0.06);
    --shadow: rgba(0, 0, 0, 0.08);
    --selection-outline: #000000;
    --workspace-glow: rgba(0, 0, 0, 0.015);
    --tool-hover-bg: #000000;
    --tool-hover-fg: #ffffff;
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    overscroll-behavior: contain;
}

body {
    background: var(--bg);
    color: var(--fg);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 300;
    -webkit-user-select: none;
    user-select: none;
}

.content {
    opacity: 0;
    transition: opacity 0.5s ease;
    display: grid;
    grid-template-columns: 280px 1fr 0px;
    grid-template-rows: 100%;
    height: 100%;
    transition: opacity 0.5s ease, grid-template-columns 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.content.inspector-open {
    grid-template-columns: 280px 1fr 280px;
}

/* Sidebars */
.sidebar {
    border-right: 1px solid var(--border);
    background: var(--bg);
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    z-index: 5;
}

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

.sidebar-section {
    padding: 18px 20px;
    border-bottom: 1px solid var(--border);
}

.sidebar-section:last-child { border-bottom: none; }

.sidebar-label {
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--fg-fainter);
    margin-bottom: 10px;
}

.sidebar-title {
    font-size: 16px;
    font-weight: 400;
    color: var(--fg-strong);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 6px;
    text-wrap: balance;
}

.sidebar-tags {
    font-size: 11px;
    color: var(--fg-faint);
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.sidebar-text {
    font-size: 12.5px;
    color: var(--fg-muted);
    line-height: 1.6;
    margin-bottom: 0;
    text-align: left;
    text-wrap: pretty;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    hyphenate-limit-chars: 5 2 2;
    hyphenate-limit-lines: 2;
    overflow-wrap: break-word;
    orphans: 3;
    widows: 3;
}

.sidebar-text + .sidebar-text {
    margin-top: 14px;
}

.sidebar .meta-row {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 12px;
    font-size: 11.5px;
    line-height: 1.7;
}

.sidebar .meta-row span:first-child { color: var(--fg-fainter); letter-spacing: 0.05em; }
.sidebar .meta-row span:last-child { color: var(--fg-muted); overflow-wrap: break-word; min-width: 0; }

.sidebar .meta-row a {
    color: var(--fg-muted);
    text-decoration: none;
    border-bottom: 1px solid var(--fg-fading);
}

.sidebar .meta-row a:hover { color: var(--fg-strong); border-bottom-color: var(--fg-strong); }

/* Inspector (right) */
.inspector {
    width: 280px;
    flex-shrink: 0;
}

.inspector-empty {
    color: var(--fg-fading);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 18px 20px;
}

.spec-row {
    display: grid;
    grid-template-columns: 70px 1fr;
    gap: 8px;
    font-size: 11.5px;
    line-height: 1.6;
    padding: 4px 0;
    align-items: center;
}

.spec-row span:first-child { color: var(--fg-fainter); letter-spacing: 0.05em; }
.spec-row span:last-child { color: var(--fg-muted); font-variant-numeric: tabular-nums; overflow-wrap: break-word; min-width: 0; }

.spec-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.spec-pair-cell {
    display: grid;
    grid-template-columns: 16px 1fr;
    gap: 4px;
    font-size: 11.5px;
    align-items: center;
}

.spec-pair-cell span:first-child { color: var(--fg-fainter); }
.spec-pair-cell span:last-child { color: var(--fg-muted); font-variant-numeric: tabular-nums; }

.preview-thumb {
    width: 100%;
    aspect-ratio: 16 / 10;
    background: var(--bg-soft);
    margin-top: 12px;
    overflow: hidden;
    border: 1px solid var(--border-strong);
}

.preview-thumb img,
.preview-thumb video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Tools section */
.tools {
    padding: 14px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: auto;
}

.tool-btn {
    appearance: none;
    background: transparent;
    border: 1px solid var(--border-strong);
    color: var(--fg-muted);
    font-family: inherit;
    font-weight: 300;
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-align: left;
    padding: 9px 12px;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.tool-btn:hover {
    background: var(--tool-hover-bg);
    color: var(--tool-hover-fg);
    border-color: var(--fg-strong);
}

.tool-btn .kbd {
    font-size: 9px;
    color: var(--fg-fainter);
    letter-spacing: 0.05em;
    text-transform: none;
}

.tool-btn:hover .kbd { color: var(--fg-faint); }

@media (max-width: 900px) {
    .content { grid-template-columns: 0 1fr 0; }
    .sidebar-left, .sidebar-right { display: none; }
}

nav {
    position: absolute;
    top: 0;
    right: 0;
    padding: 20px 40px;
    display: flex;
    gap: 24px;
    z-index: 20;
}

nav a {
    color: var(--fg);
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}

nav a:hover { color: var(--fg-strong); }
nav a.disabled { color: var(--fg-faint); pointer-events: none; }

.workspace {
    flex: 1;
    position: relative;
    overflow: hidden;
    cursor: grab;
    min-height: 0;
    touch-action: none;
    background:
        radial-gradient(circle at center, var(--workspace-glow) 0%, transparent 60%),
        var(--bg);
}

.workspace.space-mode { cursor: grab; }
.workspace.space-mode .node { cursor: grab; }

.workspace.grabbing { cursor: grabbing; }

.canvas-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 1px;
    height: 1px;
    transform-origin: 0 0;
    will-change: transform;
}

.grid-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 1;
    will-change: background-position, background-size;
}

.node {
    position: absolute;
    overflow: hidden;
    background: transparent;
    transform-origin: center center;
    transition: transform 0.15s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform, left, top;
    cursor: grab;
    border-radius: 12px;
}

.node.dragging {
    cursor: grabbing;
    transition: none;
    z-index: 100;
}

.node.selected {
    outline: 1px solid var(--selection-outline);
    outline-offset: 4px;
    z-index: 50;
}

.node .handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--tool-hover-bg);
    pointer-events: auto;
    z-index: 60;
    display: none;
}

.node.selected .handle { display: block; }

.node .handle.tl { top: -6px; left: -6px; cursor: nwse-resize; }
.node .handle.tr { top: -6px; right: -6px; cursor: nesw-resize; }
.node .handle.bl { bottom: -6px; left: -6px; cursor: nesw-resize; }
.node .handle.br { bottom: -6px; right: -6px; cursor: nwse-resize; }

.node.resizing {
    transition: none;
    z-index: 100;
}

.node video,
.node img,
.node iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
    pointer-events: none;
}

.hud {
    position: absolute;
    top: 20px;
    left: 40px;
    font-size: 12px;
    color: var(--fg-faint);
    letter-spacing: 0.1em;
    z-index: 20;
    font-variant-numeric: tabular-nums;
}

.hud-hint {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    color: var(--fg-fading);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    z-index: 20;
    pointer-events: none;
}

.bottom-bar {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    border-top: 1px solid #111;
    flex-shrink: 0;
    width: 100%;
}

.col {
    padding: 16px 40px;
    border-right: 1px solid #111;
}

.col:last-child { border-right: none; }

.col-title {
    font-size: clamp(13px, 1.3vw, 15px);
    font-weight: 400;
    color: var(--fg-strong);
    letter-spacing: 0.02em;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.col-tags {
    font-size: clamp(10px, 1vw, 12px);
    color: var(--fg-faint);
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.col-text {
    font-size: clamp(11px, 1.05vw, 12.5px);
    color: var(--fg-muted);
    line-height: 1.55;
}

.col-text strong {
    color: var(--fg-muted);
    font-weight: 400;
}

.col-meta {
    font-size: clamp(10px, 1vw, 12px);
    color: var(--fg-muted);
    line-height: 1.7;
}

.meta-row {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 12px;
}

.meta-row span:first-child {
    color: var(--fg-fainter);
    letter-spacing: 0.05em;
}

.meta-row span:last-child {
    color: var(--fg-muted);
}

.meta-row a {
    color: var(--fg-muted);
    text-decoration: none;
    border-bottom: 1px solid var(--fg-fading);
}

.meta-row a:hover {
    color: var(--fg-strong);
    border-bottom-color: var(--fg-strong);
}

@media (max-width: 768px) {
    nav { padding: 16px 20px; gap: 16px; }
    .col { padding: 12px 16px; }
    .hud { left: 20px; top: 16px; }
    .bottom-bar { grid-template-columns: 1fr; }
    .col { border-right: none; border-bottom: 1px solid var(--border-strong); }
    .col:last-child { border-bottom: none; }
}

/* Theme toggle button */
.theme-toggle {
    appearance: none;
    background: transparent;
    border: none;
    color: var(--fg);
    cursor: pointer;
    padding: 0;
    margin-left: 4px;
    font-size: 18px;
    line-height: 1;
    width: 22px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.theme-toggle:hover { color: var(--fg-strong); transform: rotate(180deg); }
.theme-toggle-icon { display: inline-block; }