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

:root {
  --bg: #0a0b0f;
  --bg-panel: #12141a;
  --bg-panel-2: #181b23;
  --border: #262b36;
  --text: #e6e8ee;
  --text-dim: #8b93a3;
  --accent: #5eead4;
  --accent-2: #7c9bff;
  --danger: #ff6b6b;
  --canvas-bg: #06070a;
  --grid-line: #1a1d26;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  overflow: hidden;
}

#app {
  display: grid;
  grid-template-rows: 48px 1fr 26px;
  grid-template-columns: 260px 1fr 300px;
  grid-template-areas:
    "topbar topbar topbar"
    "left canvas right"
    "status status status";
  height: 100vh;
  width: 100vw;
}

/* ---- topbar ---- */
#topbar {
  grid-area: topbar;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
}
#topbar .brand {
  font-family: 'Unbounded', sans-serif;
  font-weight: 700;
  font-size: 14px;
  color: var(--accent);
  margin-right: 14px;
  letter-spacing: 0.02em;
}
#topbar .sep { width: 1px; height: 22px; background: var(--border); margin: 0 6px; }
#topbar .spacer { flex: 1; }
.lang-btn { padding: 6px 9px; font-size: 11px; font-weight: 700; letter-spacing: .03em; }
.lang-btn.active { border-color: var(--accent); color: var(--accent); background: rgba(94,234,212,.1); }

.icon { display: inline-flex; width: 14px; height: 14px; flex-shrink: 0; vertical-align: -2px; }
.icon svg { width: 100%; height: 100%; display: block; }
button .icon { margin-right: 5px; }
button.icon-only .icon { margin-right: 0; }

button, .btn {
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  padding: 7px 11px;
  border-radius: 6px;
  cursor: pointer;
  transition: border-color .12s, color .12s;
  white-space: nowrap;
}
button:hover, .btn:hover { border-color: var(--accent); color: var(--accent); }
button:active { transform: translateY(1px); }
button.primary { background: var(--accent); color: #06070a; border-color: var(--accent); font-weight: 700; }
button.primary:hover { color: #06070a; opacity: .9; border-color: var(--accent); }
button.danger:hover { border-color: var(--danger); color: var(--danger); }
button.icon { padding: 7px 9px; }
button:disabled { opacity: .35; cursor: default; pointer-events: none; }

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

/* ---- panels ---- */
#left-panel, #right-panel {
  background: var(--bg-panel);
  overflow-y: auto;
  padding: 10px;
  font-size: 12px;
}
#left-panel { grid-area: left; border-right: 1px solid var(--border); }
#right-panel { grid-area: right; border-left: 1px solid var(--border); }

.panel-section { margin-bottom: 14px; }
.panel-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-dim);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

#element-list { list-style: none; margin: 0; padding: 0; }
#element-list li {
  padding: 5px 8px;
  border-radius: 5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
}
#element-list li:hover { background: var(--bg-panel-2); }
#element-list li.selected { background: rgba(94,234,212,.12); color: var(--text); }
#element-list li .tag {
  font-size: 9px; padding: 1px 5px; border-radius: 3px; border: 1px solid var(--border); color: var(--text-dim);
}
#element-list li .swatch { width: 10px; height: 10px; border-radius: 2px; border: 1px solid rgba(255,255,255,.2); flex-shrink: 0; }
#element-list li .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#element-list li .eye { opacity: .5; cursor: pointer; }
#element-list li .eye:hover { opacity: 1; }

.field { margin-bottom: 8px; }
.field label {
  display: block;
  font-size: 10.5px;
  color: var(--text-dim);
  margin-bottom: 3px;
}
.field .row { display: flex; gap: 6px; }
.field input[type=text], .field input[type=number], .field select {
  width: 100%;
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 5px;
  padding: 5px 7px;
  font-family: inherit;
  font-size: 12px;
}
.field input[type=color] {
  width: 100%; height: 28px; background: var(--bg-panel-2); border: 1px solid var(--border); border-radius: 5px; padding: 2px;
}
.field input[type=range] { width: 100%; accent-color: var(--accent); }
.field .value-badge { float: right; color: var(--accent); font-weight: 500; }
.field.checkbox { display: flex; align-items: center; gap: 6px; }
.field.checkbox input { accent-color: var(--accent); }
.field.checkbox label { margin: 0; }

.empty-hint { color: var(--text-dim); font-size: 11.5px; line-height: 1.5; padding: 6px 2px; }

/* ---- canvas area ---- */
#canvas-wrap {
  grid-area: canvas;
  position: relative;
  background: var(--canvas-bg);
  overflow: hidden;
}
#sight-canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: default; }
#canvas-hud {
  position: absolute; left: 10px; bottom: 10px;
  font-size: 11px; color: var(--text-dim);
  background: rgba(10,11,15,.7); padding: 5px 9px; border-radius: 6px;
  border: 1px solid var(--border);
  pointer-events: none;
}
#tool-dock {
  position: absolute; top: 10px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 4px; background: rgba(18,20,26,.9);
  border: 1px solid var(--border); border-radius: 10px; padding: 5px;
  backdrop-filter: blur(6px);
}
#tool-dock button.active { border-color: var(--accent); color: var(--accent); background: rgba(94,234,212,.1); }
#tool-dock input#grid-step {
  width: 56px; background: var(--bg-panel-2); border: 1px solid var(--border);
  color: var(--text); border-radius: 6px; padding: 6px 7px; font-family: inherit; font-size: 11px;
}

/* ---- status bar ---- */
#statusbar {
  grid-area: status;
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 10px;
  font-size: 11px; color: var(--text-dim); gap: 14px;
}
#status-budget.over-limit, .stats.over-limit { color: var(--danger); font-weight: 700; }

/* ---- modal (converter) ---- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(4,5,8,.72);
  display: none; align-items: stretch; justify-content: center; z-index: 50;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: 12px;
  margin: 24px; width: min(1400px, 96vw); display: flex; overflow: hidden;
}
.modal-side {
  width: 380px; flex-shrink: 0; border-right: 1px solid var(--border);
  padding: 14px; overflow-y: auto;
}
.modal-main {
  flex: 1; display: flex; flex-direction: column; min-width: 0;
}
.modal-header {
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-header h2 { font-size: 13px; margin: 0; font-weight: 700; color: var(--accent); font-family: 'Unbounded', sans-serif; }
.modal-preview {
  flex: 1; display: flex; align-items: center; justify-content: center;
  background: var(--canvas-bg); overflow: auto; min-height: 0;
}
.modal-preview img { max-width: 100%; max-height: 100%; object-fit: contain; image-rendering: pixelated; }
.modal-footer {
  padding: 10px 14px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.modal-footer .stats { font-size: 11px; color: var(--text-dim); }

.tabs { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 10px; }
.tabs button { flex: 1 1 auto; font-size: 10.5px; padding: 6px 8px; }

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: #2a2f3b; border-radius: 5px; }
::-webkit-scrollbar-track { background: transparent; }

#element-list li.nested { padding-left: 22px; }
#element-list li.group-row { font-weight: 500; }
#element-list li.group-row .expand { width: 12px; text-align: center; color: var(--text-dim); flex-shrink: 0; }
#element-list li.group-row .tag { min-width: 20px; text-align: center; }

.image-row {
  background: var(--bg-panel-2); border: 1px solid var(--border); border-radius: 7px;
  padding: 8px; margin-bottom: 8px; cursor: pointer;
}
.image-row.selected { border-color: var(--accent); }
.image-row .image-row-head { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.image-row .image-row-head .name { flex: 1; font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.image-row .eye { opacity: .6; cursor: pointer; }
.image-row .eye:hover { opacity: 1; }
.image-row .eye.danger:hover { color: var(--danger); }
.image-row .field { margin-bottom: 4px; }
.image-row input { font-size: 11px; padding: 4px 6px; }

.plain-list { list-style: none; margin: 0 0 10px; padding: 0; }
.ballistic-row {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 8px; border-radius: 6px; background: var(--bg-panel-2);
  border: 1px solid var(--border); margin-bottom: 6px; font-size: 12px;
}
.ballistic-row .name { flex: 1; }
.ballistic-row .tag { font-size: 10px; color: var(--text-dim); }

.help-content h3 { font-size: 13px; color: var(--accent); margin: 18px 0 6px; font-family: 'Unbounded', sans-serif; }
.help-content h3:first-child { margin-top: 0; }
.help-content ol, .help-content ul { margin: 4px 0 4px 18px; padding: 0; }
.help-content li { margin-bottom: 5px; }
.help-content .kbd {
  background: var(--bg-panel-2); border: 1px solid var(--border); border-radius: 4px;
  padding: 1px 6px; font-size: 11px;
}

.toast {
  position: fixed; bottom: 36px; left: 50%; transform: translateX(-50%);
  background: var(--bg-panel-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 16px; font-size: 12px; z-index: 100; opacity: 0; transition: opacity .2s;
  pointer-events: none;
}
.toast.show { opacity: 1; }
.toast.error { border-color: var(--danger); color: var(--danger); }