:root {
  --bg-0: #07090d;
  --bg-1: #0d1117;
  --bg-2: #151b24;
  --bg-3: #1c2330;
  --bg-4: #232b3a;
  --border: #2a3242;
  --border-soft: #1a2130;
  --text: #e6edf3;
  --text-dim: #8b98a9;
  --text-mute: #5a6578;
  --accent: #5eead4;
  --accent-2: #60a5fa;
  --accent-hot: #f472b6;
  --warn: #fbbf24;
  --danger: #ef4444;
  --success: #10b981;
  --shadow-lg: 0 20px 40px -12px rgba(0,0,0,0.6);
  --radius: 10px;
  --radius-sm: 6px;
  --t: 160ms ease;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: radial-gradient(1200px 800px at 10% -10%, rgba(94,234,212,0.07), transparent 60%),
              radial-gradient(900px 600px at 100% 0%, rgba(96,165,250,0.06), transparent 55%),
              var(--bg-0);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { color: var(--accent); }

h1, h2, h3, h4 { margin: 0 0 12px; color: var(--text); font-weight: 600; letter-spacing: -0.01em; }
h2 { font-size: 20px; }
h3 { font-size: 16px; }
p  { margin: 0 0 10px; color: var(--text-dim); }
code { font-family: ui-monospace, "JetBrains Mono", Menlo, monospace; font-size: 12px; background: var(--bg-2); padding: 2px 6px; border-radius: 4px; color: var(--accent); }
pre { font-family: ui-monospace, "JetBrains Mono", Menlo, monospace; font-size: 12px; }

/* ============ Layout ============ */
.app {
  display: grid;
  grid-template-columns: 230px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: linear-gradient(180deg, var(--bg-1), var(--bg-0));
  border-right: 1px solid var(--border-soft);
  padding: 18px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 14px;
  border-bottom: 1px solid var(--border-soft);
}
.brand .logo {
  width: 38px; height: 38px; border-radius: 8px;
  background: #1c2330 url("/static/img/logo.png") center/cover no-repeat;
  box-shadow: 0 6px 16px -6px rgba(0,0,0,0.6);
  border: 1px solid var(--border-soft);
}
.brand .name { font-weight: 700; font-size: 14px; letter-spacing: 0.01em; }
.brand .tag  { color: var(--text-mute); font-size: 11px; text-transform: uppercase; letter-spacing: 0.18em; }

.nav { display: flex; flex-direction: column; gap: 4px; }
.nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  color: var(--text-dim);
  border-radius: 8px;
  font-weight: 500;
  transition: background var(--t), color var(--t), transform var(--t);
}
.nav a:hover { background: var(--bg-2); color: var(--text); }
.nav a.active {
  background: linear-gradient(135deg, rgba(94,234,212,0.14), rgba(96,165,250,0.10));
  color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--border);
}
.nav a .icon { width: 18px; display: inline-flex; justify-content: center; }
.nav-section { margin-top: 10px; padding: 8px 12px 2px; color: var(--text-mute); font-size: 10px; text-transform: uppercase; letter-spacing: 0.2em; }

.sidebar .footer {
  margin-top: auto;
  border-top: 1px solid var(--border-soft);
  padding-top: 12px;
  display: flex; align-items: center; gap: 10px; font-size: 12px;
  color: var(--text-dim);
}
.sidebar .footer .who { font-weight: 600; color: var(--text); }
.sidebar .footer form { margin: 0; }

.main { padding: 28px 32px 64px; max-width: 100%; }

.page-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-soft);
}
.page-head h1 { font-size: 22px; margin: 0; }
.page-head .sub { color: var(--text-dim); font-size: 13px; margin-top: 4px; }
.page-head .actions { display: flex; gap: 8px; }

/* ============ Panels ============ */
.panel {
  background: linear-gradient(180deg, var(--bg-1), var(--bg-1) 80%, var(--bg-2));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.25);
}
.panel + .panel { margin-top: 18px; }
.panel-head { display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:14px; }
.panel-head h3 { margin: 0; }

.row { display: flex; flex-wrap: wrap; gap: 14px; }
.row > * { flex: 1 1 280px; min-width: 0; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-sidebar-main { display: grid; grid-template-columns: 300px 1fr; gap: 18px; }
@media (max-width: 1100px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-sidebar-main { grid-template-columns: 1fr; }
}

/* ============ Forms ============ */
label {
  display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--text-mute); margin: 10px 0 6px;
  font-weight: 600;
}

input[type="text"], input[type="password"], input[type="number"], input[type="search"],
select, textarea {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 11px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  outline: none;
  transition: border-color var(--t), box-shadow var(--t);
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(96,165,250,0.18);
}

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

.inline { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.inline > * { width: auto; }

button, .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--border);
  background: var(--bg-3);
  color: var(--text);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--t), color var(--t), border-color var(--t), transform var(--t);
}
button:hover, .btn:hover { background: var(--bg-4); border-color: var(--text-mute); }
button:active, .btn:active { transform: translateY(1px); }
button:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06151a;
  border-color: transparent;
  box-shadow: 0 8px 20px -10px rgba(94,234,212,0.6);
}
.btn-primary:hover { filter: brightness(1.05); color: #06151a; }

.btn-danger { color: var(--danger); border-color: rgba(239,68,68,0.4); }
.btn-danger:hover { background: rgba(239,68,68,0.12); border-color: var(--danger); color: var(--danger); }

.btn-warn  { color: var(--warn); border-color: rgba(251,191,36,0.4); }
.btn-warn:hover { background: rgba(251,191,36,0.1); color: var(--warn); }

.btn-ghost { background: transparent; border-color: var(--border-soft); color: var(--text-dim); }
.btn-ghost:hover { color: var(--text); }

.btn-sm { padding: 6px 10px; font-size: 12px; }
.btn-xs { padding: 4px 8px; font-size: 11px; }

/* ============ Drop zone ============ */
.dropzone {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  text-align: center;
  color: var(--text-dim);
  background: rgba(255,255,255,0.01);
  transition: border-color var(--t), background var(--t);
  cursor: pointer;
}
.dropzone:hover { border-color: var(--accent-2); color: var(--text); }
.dropzone.drag {
  border-color: var(--accent);
  background: rgba(94,234,212,0.06);
  color: var(--accent);
}
.dropzone input[type="file"] { display: none; }
.dropzone .hint { font-size: 12px; color: var(--text-mute); margin-top: 4px; }
.dropzone .big { font-size: 28px; margin-bottom: 6px; }

/* ============ Gallery ============ */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}
.card {
  background: var(--bg-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
  display: flex; flex-direction: column;
}
.card:hover {
  border-color: var(--accent-2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.card.selected { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(94,234,212,0.3); }

.card .thumb {
  width: 100%;
  aspect-ratio: 1 / 1;
  background:
    linear-gradient(45deg, #1a1f28 25%, transparent 25%) 0 0,
    linear-gradient(-45deg, #1a1f28 25%, transparent 25%) 0 0,
    linear-gradient(45deg, transparent 75%, #1a1f28 75%) 8px 8px,
    linear-gradient(-45deg, transparent 75%, #1a1f28 75%) 8px 8px,
    var(--bg-3);
  background-size: 16px 16px;
  display: flex; align-items: center; justify-content: center;
  cursor: grab;
}
.card .thumb:active { cursor: grabbing; }
.card .thumb img {
  max-width: 92%;
  max-height: 92%;
  object-fit: contain;
  image-rendering: pixelated;
  pointer-events: none;
}
.card .meta { padding: 8px 10px; border-top: 1px solid var(--border-soft); }
.card .name {
  font-size: 12px; color: var(--text); font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card .dim { font-size: 11px; color: var(--text-mute); margin-top: 2px; }
.card .actions {
  display: flex; gap: 4px; padding: 6px 8px 8px;
  border-top: 1px solid var(--border-soft);
  flex-wrap: wrap;
}
.card .actions .btn { flex: 1 1 auto; padding: 5px 8px; font-size: 11px; }
.card .draghandle {
  position: absolute; top: 6px; left: 6px;
  background: rgba(0,0,0,0.55); color: var(--text);
  border-radius: 4px; padding: 2px 6px; font-size: 10px;
  opacity: 0; transition: opacity var(--t);
}
.card:hover .draghandle { opacity: 1; }

.empty {
  text-align: center; padding: 32px;
  color: var(--text-mute); font-size: 13px;
  border: 1px dashed var(--border-soft); border-radius: var(--radius);
}

/* ============ Toast ============ */
#toasts {
  position: fixed; bottom: 18px; right: 18px;
  display: flex; flex-direction: column; gap: 10px;
  z-index: 1000;
}
.toast {
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  animation: slide-in 220ms ease;
}
.toast.ok    { border-left: 3px solid var(--success); }
.toast.err   { border-left: 3px solid var(--danger); }
.toast.warn  { border-left: 3px solid var(--warn); }
.toast.info  { border-left: 3px solid var(--accent-2); }

@keyframes slide-in {
  from { opacity: 0; transform: translateX(12px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ============ Modal ============ */
.modal-bg {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 900;
  animation: fade-in 160ms ease;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  width: min(480px, 92vw);
  box-shadow: var(--shadow-lg);
}
.modal h3 { margin-bottom: 14px; }
.modal .actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }

/* ============ Badges ============ */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  border-radius: 999px;
  background: var(--bg-3);
  color: var(--text-dim);
  border: 1px solid var(--border-soft);
  font-weight: 700;
}
.badge.accent { color: var(--accent); border-color: rgba(94,234,212,0.3); background: rgba(94,234,212,0.08); }

/* ============ Tabs ============ */
.tabs {
  display: flex; gap: 4px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 14px;
}
.tab {
  padding: 8px 14px;
  color: var(--text-dim);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  font-size: 13px;
  font-weight: 600;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ============ Stage (compose canvas) ============ */
.stage-wrap { display: flex; justify-content: center; align-items: center; padding: 10px; }
.stage {
  position: relative;
  width: 256px; height: 256px;
  background:
    linear-gradient(45deg, #11161e 25%, transparent 25%) 0 0,
    linear-gradient(-45deg, #11161e 25%, transparent 25%) 0 0,
    linear-gradient(45deg, transparent 75%, #11161e 75%) 8px 8px,
    linear-gradient(-45deg, transparent 75%, #11161e 75%) 8px 8px,
    #060a10;
  background-size: 16px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 12px 30px -12px rgba(0,0,0,0.8);
}
.stage.zoomed { transform: scale(2); transform-origin: top left; }
.stage img {
  position: absolute; top: 0; left: 0;
  max-width: none; max-height: none;
  user-select: none; -webkit-user-drag: none;
  image-rendering: pixelated;
}
.stage .bbox {
  position: absolute; border: 1.5px dashed var(--accent);
  pointer-events: none;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.6) inset;
}
.stage .crosshair {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}
.stage .center-mark {
  position: absolute; top: 50%; left: 50%; width: 1px; height: 1px;
  box-shadow: 0 0 0 3px rgba(96,165,250,0.6);
  border-radius: 50%; pointer-events: none;
}

.controls-group {
  display: flex; flex-direction: column; gap: 4px;
  padding: 10px; background: var(--bg-2); border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
}
.controls-group .row-inline {
  display: grid; grid-template-columns: 70px 1fr 60px;
  align-items: center; gap: 8px;
}
.controls-group .row-inline > label { margin: 0; text-transform: none; letter-spacing: 0; font-size: 12px; color: var(--text-dim); font-weight: 500; }
.controls-group .row-inline > input[type="number"] { padding: 6px 8px; font-size: 12px; text-align: right; }

.info-pre {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 12px;
  background: var(--bg-2);
  padding: 12px; border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  white-space: pre;
  margin: 0;
}

/* ============ Crop canvas viewport ============ */
.crop-viewport {
  position: relative;
  background:
    linear-gradient(45deg, #11161e 25%, transparent 25%) 0 0,
    linear-gradient(-45deg, #11161e 25%, transparent 25%) 0 0,
    linear-gradient(45deg, transparent 75%, #11161e 75%) 8px 8px,
    linear-gradient(-45deg, transparent 75%, #11161e 75%) 8px 8px,
    #060a10;
  background-size: 16px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  user-select: none;
  min-height: 520px;
  cursor: crosshair;
}
.crop-viewport.panning { cursor: grabbing; }

/* ============ Modal helpers ============ */
.kbd { display: inline-block; padding: 1px 6px; background: var(--bg-3); border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 4px; font-family: ui-monospace, Menlo, monospace; font-size: 11px; color: var(--text-dim); }

hr { border: none; border-top: 1px solid var(--border-soft); margin: 16px 0; }

/* ============ Collapsed sidebar on narrow ============ */
@media (max-width: 820px) {
  .app { grid-template-columns: 64px 1fr; }
  .sidebar { padding: 14px 8px; }
  .brand .name, .brand .tag, .nav a span.label, .sidebar .footer .who, .nav-section { display: none; }
  .nav a { justify-content: center; padding: 10px; }
}