:root {
  --bg: #0e1116;
  --bg-soft: #151a21;
  --panel: #171c24;
  --border: #262d38;
  --text: #e6e9ee;
  --text-dim: #8b94a3;
  --accent: #7c8cff;
  --accent-strong: #5a6cff;
  --accent-soft: rgba(124, 140, 255, 0.14);
  --danger: #ff5c5c;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  background: radial-gradient(1200px 600px at 70% -10%, #1a2130 0%, var(--bg) 55%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: rgba(14, 17, 22, 0.7);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand h1 {
  font-size: 18px;
  font-weight: 650;
  margin: 0;
  letter-spacing: 0.2px;
}

.logo {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-strong), #8f5cff);
}

.conn {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
}

.conn .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ffb020;
}

.conn.ok .dot {
  background: #2ecc71;
  box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.18);
}

.conn.err .dot {
  background: var(--danger);
}

/* ---------- layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 22px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 22px 48px;
}

@media (max-width: 860px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

/* ---------- panel ---------- */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  height: fit-content;
  position: sticky;
  top: 80px;
}

@media (max-width: 860px) {
  .panel {
    position: static;
  }
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
  margin-bottom: 7px;
}

.row {
  display: grid;
  grid-template-columns: 1fr 88px;
  gap: 12px;
}

.field.narrow label {
  text-align: left;
}

.select-wrap {
  position: relative;
}

.select-wrap::after {
  content: "";
  position: absolute;
  right: 13px;
  top: 50%;
  width: 8px;
  height: 8px;
  transform: translateY(-70%) rotate(45deg);
  border-right: 2px solid var(--text-dim);
  border-bottom: 2px solid var(--text-dim);
  pointer-events: none;
}

select,
textarea {
  width: 100%;
  background: var(--bg-soft);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

select {
  appearance: none;
  padding-right: 34px;
  cursor: pointer;
}

textarea {
  resize: vertical;
  min-height: 96px;
}

select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ---------- mode switch ---------- */
.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 18px;
}

.mode-btn {
  border: none;
  background: transparent;
  color: var(--text-dim);
  padding: 8px;
  border-radius: 6px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.mode-btn.active {
  background: var(--accent-soft);
  color: #fff;
}

.field > .mode-switch {
  margin-bottom: 0;
}

/* ---------- reference images ---------- */
.refs {
  margin-bottom: 16px;
}

.refs > label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
  margin-bottom: 7px;
}

.refs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.ref-thumb {
  position: relative;
  width: 62px;
  height: 62px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-soft);
}

.ref-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ref-thumb .ref-idx {
  position: absolute;
  top: 3px;
  left: 3px;
  font-size: 10px;
  font-weight: 700;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border-radius: 4px;
  padding: 1px 5px;
}

.ref-thumb .ref-rm {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 18px;
  height: 18px;
  border: none;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  opacity: 0;
  transition: opacity 0.15s;
}

.ref-thumb:hover .ref-rm {
  opacity: 1;
}

.dropzone {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-dim);
  font-size: 13px;
  transition: border-color 0.15s, background 0.15s;
  margin-bottom: 0;
  text-transform: none !important;
  letter-spacing: 0 !important;
  font-weight: 500 !important;
}

.dropzone:hover,
.dropzone.drag {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--text);
}

.dropzone small {
  display: block;
  color: var(--text-dim);
}

.ref-hint {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--text-dim);
}

/* ---------- generate button ---------- */
.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-strong), #8f5cff);
  color: #fff;
  font-size: 15px;
  font-weight: 650;
  cursor: pointer;
  transition: filter 0.15s, transform 0.05s;
}

.btn-primary:hover:not(:disabled) {
  filter: brightness(1.08);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(1px);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: default;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.hint {
  margin: 12px 0 0;
  font-size: 12.5px;
  color: var(--text-dim);
  text-align: center;
}

kbd {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 11px;
  font-family: inherit;
}

.error {
  margin-top: 14px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 92, 92, 0.1);
  border: 1px solid rgba(255, 92, 92, 0.35);
  color: #ffb4b4;
  font-size: 13px;
  word-break: break-word;
}

/* ---------- results ---------- */
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--text-dim);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.empty-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 70px 20px;
  color: var(--text-dim);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  text-align: center;
}

.card {
  position: relative;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  animation: rise 0.3s ease;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #0a0d12;
}

.card .actions {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 10px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.65), transparent);
  opacity: 0;
  transition: opacity 0.18s;
}

.card:hover .actions {
  opacity: 1;
}

.card .actions button {
  border: none;
  border-radius: 7px;
  padding: 6px 11px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  color: #fff;
  background: rgba(23, 28, 36, 0.9);
  backdrop-filter: blur(4px);
  transition: filter 0.15s;
}

.card .actions button:hover {
  filter: brightness(1.25);
}

.card .badge {
  position: absolute;
  top: 10px;
  left: 10px;
  max-width: calc(100% - 20px);
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(14, 17, 22, 0.75);
  backdrop-filter: blur(4px);
  font-size: 11px;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}