/* =====================================================================
   SVG Optimizer Pro — app.css
   Extends the shared design system (base.css). Colors derive ONLY from
   base.css CSS variables so dark + light themes both work.
   ===================================================================== */

/* ---- Theme toggle icon swap (sun in dark, moon in light) ---- */
[data-theme="light"] .icon-sun { display: none; }
.icon-moon { display: none; }

/* ===================== Toolbar ===================== */
.toolbar-panel { padding: var(--space-4) var(--space-5); }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-4);
}
.toolbar-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}
.toolbar .spacer { flex: 1; }

.options-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4) var(--space-6);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}
.options-row .check { gap: var(--space-2); font-size: 13px; }
.options-row .muted { font-size: 12px; }

.field-inline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.field-inline label { white-space: nowrap; }
.field-inline input[type=number] { width: 72px; padding-top: 8px; padding-bottom: 8px; }

/* ===================== Status badge ===================== */
#statusBadge .status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-muted); flex: none;
  transition: background var(--dur-2), box-shadow var(--dur-2);
}
#statusBadge.is-valid {
  background: var(--success-soft); color: var(--success); border-color: transparent;
}
#statusBadge.is-valid .status-dot { background: var(--success); box-shadow: 0 0 10px var(--success); }
#statusBadge.is-error {
  background: var(--danger-soft); color: var(--danger); border-color: transparent;
}
#statusBadge.is-error .status-dot { background: var(--danger); box-shadow: 0 0 10px var(--danger); }

/* ===================== Two-pane editor ===================== */
.editor {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-top: var(--space-5);
}
.pane {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  min-width: 0;
}
.pane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
}
.pane-title {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.pane-meta { font-size: 12px; }

/* --- Input pane --- */
.pane--input #input {
  flex: 1;
  width: 100%;
  min-height: 380px;
  border: none;
  border-radius: 0;
  background: transparent;
  padding: var(--space-5);
  font-size: 13.5px;
  line-height: 1.7;
  resize: none;
  tab-size: 2;
}
.pane--input #input:focus { box-shadow: none; background: transparent; }

/* --- Output pane --- */
.pane--output { position: relative; }
.output-scroll {
  position: relative;
  flex: 1;
  min-height: 380px;
  overflow: auto;
}
.output-code {
  margin: 0;
  padding: var(--space-5);
  font-size: 13.5px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 100%;
  tab-size: 2;
  color: var(--text-secondary);
}
.output-code:empty { display: none; }

/* ===================== Output empty state ===================== */
.output-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  pointer-events: none;
}
.output-empty button { pointer-events: auto; margin-top: var(--space-2); }
.output-empty p { margin: 0; }
.output-empty.is-hidden { display: none; }

/* ===================== Error panel ===================== */
.error-panel {
  margin-top: var(--space-5);
  border-color: var(--danger);
  background: linear-gradient(var(--danger-soft), var(--danger-soft)), var(--glass);
}
.error-head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--danger);
  margin-bottom: var(--space-3);
}
.error-head svg { width: 20px; height: 20px; flex: none; }
.error-head strong { font-size: 15px; }
.error-head .badge { margin-left: auto; }
.error-msg {
  margin: 0 0 var(--space-3);
  color: var(--text);
  font-size: 13.5px;
  word-break: break-word;
}
.error-context {
  margin: 0;
  padding: var(--space-3) var(--space-4);
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 12.5px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  color: var(--text-secondary);
}
.error-context .caret { color: var(--danger); font-weight: 700; }
.error-context .err-line { color: var(--text); }

/* ===================== Stats bar ===================== */
.stats-bar {
  margin-top: var(--space-5);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
}
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
}
.stat-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.stat-value {
  font-family: var(--font-mono);
  font-size: clamp(1rem, .85rem + .8vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -.01em;
}

/* ===================== Rendered preview ===================== */
.preview-grid { margin-top: var(--space-5); }
.pane--preview { min-height: 0; }
.preview-box {
  flex: 1;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  overflow: auto;
  background-image:
    linear-gradient(45deg, var(--surface-3) 25%, transparent 25%),
    linear-gradient(-45deg, var(--surface-3) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--surface-3) 75%),
    linear-gradient(-45deg, transparent 75%, var(--surface-3) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}
.preview-box svg {
  max-width: 100%;
  max-height: 280px;
  width: auto;
  height: auto;
  display: block;
}
.preview-box .empty { padding: var(--space-6) var(--space-4); }

/* ===================== Shortcuts modal table ===================== */
.shortcut-table { width: 100%; border-collapse: collapse; }
.shortcut-table td {
  padding: 10px 4px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.shortcut-table tr:last-child td { border-bottom: none; }
.shortcut-table td:last-child { text-align: right; white-space: nowrap; }
.shortcut-table kbd + kbd { margin-left: 4px; }

/* ===================== Responsive ===================== */
@media (max-width: 860px) {
  .editor { grid-template-columns: 1fr; }
  .pane--input #input,
  .output-scroll { min-height: 280px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  #statusBadge { display: none; }
  .toolbar .spacer { display: none; }
  .toolbar-group { width: 100%; }
  .toolbar-group .btn { flex: 1; }
  .options-row { width: 100%; }
  .field-inline { width: 100%; }
}

@media (max-width: 460px) {
  .stats-bar { grid-template-columns: 1fr 1fr; text-align: left; }
  .stat { text-align: left; }
}