/* ── Floating side panel — index.html (left side) ── */
.idx-panel-trigger {
  position: fixed;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 200;
  background: rgba(255,255,255,.1);
  color: rgba(255,255,255,.8);
  border: 1px solid rgba(255,255,255,.12);
  border-left: none;
  border-radius: 0 8px 8px 0;
  padding: 14px 10px;
  cursor: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  transition: background .2s, padding-left .2s, color .2s;
  backdrop-filter: blur(8px);
}
.idx-panel-trigger:hover {
  background: rgba(255,255,255,.16);
  color: #fff;
  padding-left: 14px;
}
.idx-panel-trigger svg { flex-shrink: 0; writing-mode: horizontal-tb; }

.idx-panel {
  position: fixed;
  left: 0;
  top: 0;
  height: 100%;
  width: 320px;
  max-width: 90vw;
  z-index: 300;
  background: #0a0a0a;
  border-right: 1px solid rgba(255,255,255,.08);
  transform: translateX(-100%);
  transition: transform .35s var(--ease-out);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  box-shadow: 8px 0 40px rgba(0,0,0,.6);
}
.idx-panel--open { transform: translateX(0); }

.idx-panel__overlay {
  position: fixed;
  inset: 0;
  z-index: 299;
  background: rgba(0,0,0,.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
.idx-panel__overlay--visible { opacity: 1; pointer-events: auto; }

.idx-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  flex-shrink: 0;
}
.idx-panel__logo {
  font-family: var(--font-mono);
  font-size: .55rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
}
.idx-panel__close {
  background: none;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 6px;
  color: rgba(255,255,255,.5);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: none;
  transition: color .2s, border-color .2s;
}
.idx-panel__close:hover { color: #fff; border-color: rgba(255,255,255,.3); }

.idx-panel__body { padding: 24px; flex: 1; }

.idx-panel__section-title {
  font-family: var(--font-mono);
  font-size: .52rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.3);
  margin-bottom: 14px;
}

.idx-panel__nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 32px;
}
.idx-panel__nav-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 8px;
  color: rgba(255,255,255,.75);
  font-family: var(--font-sans);
  font-size: .8rem;
  font-weight: 500;
  cursor: none;
  transition: background .2s, border-color .2s, transform .15s;
  text-align: left;
}
.idx-panel__nav-btn:hover {
  background: rgba(255,255,255,.09);
  border-color: rgba(255,255,255,.2);
  transform: translateX(3px);
}
.idx-panel__nav-btn svg { flex-shrink: 0; color: rgba(255,255,255,.5); }

.idx-panel__divider {
  height: 1px;
  background: rgba(255,255,255,.06);
  margin-bottom: 28px;
}

.idx-panel__form { display: flex; flex-direction: column; gap: 14px; }

.idx-panel__input,
.idx-panel__textarea {
  width: 100%;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 8px;
  padding: 12px 14px;
  font-family: var(--font-sans);
  font-size: .78rem;
  color: rgba(255,255,255,.85);
  transition: border-color .2s;
  resize: none;
}
.idx-panel__input::placeholder,
.idx-panel__textarea::placeholder { color: rgba(255,255,255,.25); }
.idx-panel__input:focus,
.idx-panel__textarea:focus {
  outline: none;
  border-color: rgba(255,255,255,.3);
}
.idx-panel__textarea { min-height: 100px; }

.idx-panel__submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 20px;
  background: var(--color-white);
  color: #000;
  border: none;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: .78rem;
  font-weight: 700;
  cursor: none;
  transition: background .2s, transform .15s;
}
.idx-panel__submit:hover:not(:disabled) { background: rgba(255,255,255,.88); transform: translateY(-1px); }
.idx-panel__submit:disabled { opacity: .5; cursor: not-allowed; }

.idx-panel__note {
  font-family: var(--font-sans);
  font-size: .7rem;
  min-height: 1.2em;
  color: rgba(255,255,255,.45);
  text-align: center;
}
.idx-panel__note--ok    { color: #4ade80; }
.idx-panel__note--error { color: #f87171; }

@media (max-width: 640px) {
  .idx-panel { width: 100vw; max-width: 100vw; }
}