:root {
  --bg: #0f172a;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-strong: rgba(255, 255, 255, 0.13);
  --text: #f8fafc;
  --muted: #cbd5e1;
  --accent: #8b5cf6;
  --accent-2: #06b6d4;
  --danger: #fb7185;
  --radius: 24px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(139, 92, 246, 0.38), transparent 32rem),
    radial-gradient(circle at bottom right, rgba(6, 182, 212, 0.28), transparent 32rem),
    var(--bg);
}

button, input, select, textarea { font: inherit; }

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: #a5b4fc;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  font-size: 0.78rem;
}

h1, h2, p { margin-top: 0; }

h1 {
  margin-bottom: 12px;
  font-size: clamp(2.25rem, 5vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

h2 { margin-bottom: 6px; }

.subtitle {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.1rem;
}

.status-card, .panel, .tab {
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(18px);
}

.status-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 999px;
  white-space: nowrap;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #22c55e;
  box-shadow: 0 0 16px #22c55e;
}

.panel {
  border-radius: var(--radius);
  padding: 24px;
}

.settings-panel {
  display: grid;
  grid-template-columns: 0.9fr 1.5fr;
  gap: 24px;
  margin-bottom: 18px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

input, select, textarea {
  width: 100%;
  color: var(--text);
  background: rgba(15, 23, 42, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  padding: 13px 14px;
  outline: none;
}

textarea { resize: vertical; }

input:focus, select:focus, textarea:focus {
  border-color: rgba(139, 92, 246, 0.9);
  box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.18);
}

code {
  color: #bae6fd;
  background: rgba(14, 165, 233, 0.12);
  border-radius: 8px;
  padding: 2px 6px;
}

.tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
}

.tab, button {
  cursor: pointer;
  color: var(--text);
  border-radius: 999px;
  border: 0;
  padding: 13px 18px;
  font-weight: 800;
}

button {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  transition: transform 0.2s ease, opacity 0.2s ease;
}

button:hover { transform: translateY(-1px); }
button:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.tab { background: var(--panel); }
.tab.active { background: linear-gradient(135deg, rgba(139, 92, 246, 0.9), rgba(6, 182, 212, 0.9)); }

.ghost {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.14);
}

.workspace { display: none; }
.workspace.active { display: block; }

.generator-panel { min-height: 540px; }

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.messages {
  display: grid;
  gap: 14px;
  min-height: 260px;
  max-height: 420px;
  overflow: auto;
  padding-right: 4px;
  margin-bottom: 18px;
}

.message {
  width: min(780px, 88%);
  white-space: pre-wrap;
  line-height: 1.6;
  border-radius: 20px;
  padding: 15px 16px;
}

.message.user {
  justify-self: end;
  background: rgba(139, 92, 246, 0.22);
  border: 1px solid rgba(139, 92, 246, 0.28);
}

.message.assistant {
  justify-self: start;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.composer, .photo-form { display: grid; gap: 12px; }
.form-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: center;
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.photo-card {
  border-radius: 22px;
  overflow: hidden;
  background: var(--panel-strong);
  border: 1px solid rgba(255,255,255,0.14);
}

.photo-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.photo-card p {
  margin: 0;
  padding: 14px;
  color: var(--muted);
  line-height: 1.5;
}

.error {
  color: #fecdd3;
  border-color: rgba(251, 113, 133, 0.36) !important;
  background: rgba(251, 113, 133, 0.12) !important;
}

.loading {
  display: inline-flex;
  gap: 5px;
  align-items: center;
}

.loading span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 0.9s infinite ease-in-out alternate;
}
.loading span:nth-child(2) { animation-delay: 0.15s; }
.loading span:nth-child(3) { animation-delay: 0.3s; }

@keyframes pulse {
  from { opacity: 0.35; transform: translateY(2px); }
  to { opacity: 1; transform: translateY(-2px); }
}

@media (max-width: 820px) {
  .hero, .settings-panel, .panel-header { grid-template-columns: 1fr; flex-direction: column; }
  .settings-grid, .form-row { grid-template-columns: 1fr; }
  .message { width: 100%; }
}