/* ================================================================
   Pinout Generator — styles.css
   ================================================================ */

/* ── Tokens ─────────────────────────────────────────────────────── */

:root {
  /* Palette */
  --c-bg:          #f1f5f9;
  --c-surface:     #ffffff;
  --c-surface2:    #f8fafc;
  --c-border:      #e2e8f0;
  --c-border2:     #cbd5e1;
  --c-text:        #0f172a;
  --c-text2:       #334155;
  --c-muted:       #64748b;
  --c-accent:      #6366f1;
  --c-accent2:     #4f46e5;
  --c-accent-a:    rgba(99, 102, 241, 0.10);
  --c-danger:      #ef4444;
  --c-danger-a:    rgba(239, 68, 68, 0.08);

  /* Radii */
  --r-sm:   6px;
  --r-md:   10px;
  --r-lg:   14px;
  --r-pill: 999px;

  /* Shadows */
  --sh-xs: 0 1px 2px rgba(15,23,42,0.05);
  --sh-sm: 0 1px 3px rgba(15,23,42,0.08), 0 1px 2px rgba(15,23,42,0.04);

  /* Header height */
  --hdr-h: 52px;
}

[data-theme="dark"] {
  --c-bg:          #0f172a;
  --c-surface:     #1e293b;
  --c-surface2:    #162032;
  --c-border:      #2d3f55;
  --c-border2:     #3d5070;
  --c-text:        #f1f5f9;
  --c-text2:       #cbd5e1;
  --c-muted:       #64748b;
  --c-accent:      #818cf8;
  --c-accent2:     #6366f1;
  --c-accent-a:    rgba(129, 140, 248, 0.12);
  --c-danger:      #f87171;
  --c-danger-a:    rgba(248, 113, 113, 0.10);
}

/* ── Reset ───────────────────────────────────────────────────────── */

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

/* ── Full-height app shell ───────────────────────────────────────── */

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13.5px;
  line-height: 1.55;
  background: var(--c-bg);
  color: var(--c-text);
  display: flex;
  flex-direction: column;
}

/* ── Header ─────────────────────────────────────────────────────── */

.app-header {
  height: var(--hdr-h);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  box-shadow: var(--sh-xs);
  z-index: 20;
  gap: 1rem;
}

.app-header__brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--c-accent);
  flex-shrink: 0;
}

.app-title {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.app-header__right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.app-subtitle {
  font-size: 0.75rem;
  color: var(--c-muted);
  white-space: nowrap;
}

/* ── Theme toggle ───────────────────────────────────────────────── */

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--c-muted);
}

.switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
  flex-shrink: 0;
}

.switch input { opacity: 0; width: 0; height: 0; position: absolute; }

.slider {
  position: absolute;
  inset: 0;
  cursor: pointer;
  background: var(--c-border2);
  border-radius: var(--r-pill);
  transition: background 0.2s;
}

.slider::before {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  top: 3px;
  left: 3px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.25);
  transition: transform 0.2s;
}

input:checked + .slider { background: var(--c-accent); }
input:checked + .slider::before { transform: translateX(16px); }

/* ── Two-pane layout ────────────────────────────────────────────── */

.layout {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  overflow: hidden;
}

/* ── Left: workspace ────────────────────────────────────────────── */

.workspace {
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--c-border) transparent;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--c-bg);
}

/* ── Card (used inside workspace) ───────────────────────────────── */

.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.section-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--c-muted);
}

/* ── Table ──────────────────────────────────────────────────────── */

.table-scroll {
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  overflow: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--c-border) transparent;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--c-surface);
  font-size: 0.8rem;
}

thead {
  position: sticky;
  top: 0;
  background: var(--c-surface2);
  z-index: 1;
}

th {
  padding: 0.38rem 0.65rem;
  text-align: left;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--c-muted);
  border-bottom: 1px solid var(--c-border);
  white-space: nowrap;
}

td {
  padding: 0.35rem 0.65rem;
  border-bottom: 1px solid var(--c-border);
  vertical-align: middle;
  font-size: 0.8rem;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--c-surface2); }

.table-empty-cell {
  text-align: center;
  color: var(--c-muted);
  font-style: italic;
  padding: 1rem;
}

/* ── Diagram area ───────────────────────────────────────────────── */

.diagram-wrapper {
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background: var(--c-bg);
  min-height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--c-border) transparent;
  padding: 0.75rem;
}

.diagram-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  color: var(--c-muted);
  font-size: 0.8rem;
  text-align: center;
  padding: 1.5rem;
  user-select: none;
}

.diagram-empty__icon {
  color: var(--c-muted);
  opacity: 0.45;
}

svg#my-svg { display: block; flex-shrink: 0; }

/* ── Right: sidebar ─────────────────────────────────────────────── */

.sidebar {
  background: var(--c-surface);
  border-left: 1px solid var(--c-border);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--c-border) transparent;
  display: flex;
  flex-direction: column;
}

.sidebar-section {
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

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

.sidebar-section--actions { background: var(--c-surface2); }

.sidebar-section--export {
  margin-top: auto;
  border-top: 1px solid var(--c-border);
  border-bottom: none;
}

.sidebar-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.sidebar-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--c-muted);
}

.sidebar-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--c-muted);
}

.pin-badge {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.1rem 0.5rem;
  border-radius: var(--r-pill);
  background: var(--c-accent-a);
  color: var(--c-accent);
}

/* ── Inputs ─────────────────────────────────────────────────────── */

input[type="color"] {
  appearance: none;
  width: 28px;
  height: 22px;
  border: none;
  padding: 0;
  border-radius: var(--r-sm);
  background: transparent;
  cursor: pointer;
}

input[type="color"]::-webkit-color-swatch {
  border-radius: 4px;
  border: 1px solid var(--c-border2);
}
input[type="color"]::-moz-color-swatch {
  border-radius: 4px;
  border: 1px solid var(--c-border2);
}

input[type="text"] {
  width: 100%;
  padding: 0.28rem 0.5rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 0.8rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--c-accent-a);
}

/* ── Buttons ────────────────────────────────────────────────────── */

.btn-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 0.38rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1.5px solid transparent;
  border-radius: var(--r-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.1s, color 0.15s;
}

/* Primary */
.btn--primary {
  background: var(--c-accent);
  color: #fff;
  border-color: var(--c-accent);
  box-shadow: 0 1px 4px rgba(99,102,241,0.30);
}
.btn--primary:hover {
  background: var(--c-accent2);
  border-color: var(--c-accent2);
  box-shadow: 0 3px 8px rgba(99,102,241,0.35);
  transform: translateY(-1px);
}
.btn--primary:active { transform: translateY(0); }

/* Ghost */
.btn--ghost {
  background: transparent;
  color: var(--c-text2);
  border-color: var(--c-border);
}
.btn--ghost:hover {
  background: var(--c-accent-a);
  border-color: var(--c-accent);
  color: var(--c-accent);
}

/* Outline */
.btn--outline {
  background: transparent;
  color: var(--c-muted);
  border-color: var(--c-border);
}
.btn--outline:hover {
  background: var(--c-accent-a);
  border-color: var(--c-accent);
  color: var(--c-accent);
}

/* Danger icon button */
.btn--danger {
  background: transparent;
  color: var(--c-danger);
  border-color: transparent;
  padding: 0.2rem 0.35rem;
  font-size: 0.72rem;
}
.btn--danger:hover {
  background: var(--c-danger-a);
}

/* ── Bulk-add group ──────────────────────────────────────────────── */

.add-group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.add-count-input {
  width: 46px;
  padding: 0.35rem 0.25rem;
  font-size: 0.8rem;
  border-radius: var(--r-pill);
  border: 1.5px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text);
  text-align: center;
  -moz-appearance: textfield;
  appearance: textfield;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.add-count-input::-webkit-outer-spin-button,
.add-count-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.add-count-input:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--c-accent-a);
}

/* ── Settings panel ─────────────────────────────────────────────── */

.settings {
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  overflow: hidden;
}

.settings__summary {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.7rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--c-muted);
  background: var(--c-surface2);
  user-select: none;
}
.settings__summary::-webkit-details-marker { display: none; }
.settings[open] .settings__summary { border-bottom: 1px solid var(--c-border); }

.settings__arrow {
  font-size: 0.5rem;
  margin-left: auto;
  transition: transform 0.2s;
}
.settings[open] .settings__arrow { transform: rotate(180deg); }

.settings__body {
  padding: 0.75rem 0.8rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.55rem 0.65rem;
  align-items: center;
  background: var(--c-surface);
}

.settings-label {
  font-size: 0.74rem;
  color: var(--c-muted);
  white-space: nowrap;
}

.settings-label span {
  font-weight: 600;
  color: var(--c-text2);
  font-variant-numeric: tabular-nums;
}

.settings-input,
.settings-select {
  width: 100%;
  min-width: 0;
  padding: 0.22rem 0.45rem;
  font-size: 0.78rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text);
}
.settings-input:focus,
.settings-select:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--c-accent-a);
}

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

input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--c-accent);
  cursor: pointer;
  justify-self: start;
}

/* ── Toast ───────────────────────────────────────────────────────── */

.toast-container {
  position: fixed;
  bottom: 1.1rem;
  right: 1.1rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  pointer-events: none;
}

.toast {
  background: var(--c-text);
  color: var(--c-bg);
  padding: 0.5rem 0.85rem;
  border-radius: var(--r-md);
  font-size: 0.8rem;
  font-weight: 500;
  max-width: 260px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: auto;
}
.toast--visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ─────────────────────────────────────────────────── */

@media (max-width: 860px) {
  html, body { height: auto; overflow: auto; }

  .layout {
    display: flex;
    flex-direction: column;
    overflow: visible;
    height: auto;
  }

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

  .sidebar-section--export {
    margin-top: 0;
    border-top: 1px solid var(--c-border);
  }

  .workspace {
    overflow: visible;
    height: auto;
  }
}

@media (max-width: 520px) {
  .app-header { padding: 0 0.85rem; }
  .app-subtitle { display: none; }
  .workspace { padding: 0.85rem; }
  .sidebar-section { padding: 0.85rem; }
}