:root {
  --bg-a: #f6f2ea;
  --bg-b: #dde9ee;
  --ink: #1f2933;
  --muted: #5f6c76;
  --card: #ffffffcc;
  --line: #d0d8de;
  --primary: #0f5b6e;
  --primary-ink: #ffffff;
  --chip: #eef4f6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top left, var(--bg-b), var(--bg-a));
}

.shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}

.hero h1 {
  margin: 0;
  font-family: "DM Serif Display", serif;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 400;
}

.kicker {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  color: var(--muted);
}

.subtitle {
  max-width: 65ch;
  color: var(--muted);
}

.panel {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
  backdrop-filter: blur(6px);
  padding: 20px;
  box-shadow: 0 10px 30px #1f29331a;
}

.panel-head {
  display: grid;
  gap: 10px;
  margin-bottom: 12px;
}

.panel-head h2 {
  margin: 0;
}

.endpoint-wrap label,
.inline-grid label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 4px;
}

input[type="url"],
input[type="file"],
select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.meta-text {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.82rem;
}

.chat {
  display: grid;
  gap: 12px;
  max-height: 52vh;
  overflow: auto;
  padding: 8px 2px;
  margin-bottom: 12px;
}

.msg {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: #fff;
}

.msg.user {
  background: #f1f7fa;
}

.msg-role {
  margin: 0;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--muted);
}

.msg-text {
  margin: 6px 0 0;
  line-height: 1.45;
}

.msg-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.option-btn {
  border: 1px solid var(--line);
  background: var(--chip);
  color: var(--ink);
  padding: 8px 10px;
  border-radius: 999px;
  font: inherit;
  cursor: pointer;
}

.option-btn:hover {
  border-color: var(--primary);
}

.msg-image {
  margin-top: 10px;
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid var(--line);
  display: none;
  background: #f7fafc;
}

.controls {
  display: grid;
  gap: 10px;
}

.settings-grid {
  display: grid;
  gap: 10px;
  border: 1px dashed var(--line);
  border-radius: 14px;
  padding: 10px;
  background: #fcfeff;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--ink);
}

.check-row input {
  width: 16px;
  height: 16px;
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: 12px;
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-ink);
}

.btn-secondary {
  background: #e6ecef;
  color: var(--ink);
}

@media (max-width: 720px) {
  .shell {
    padding: 20px 12px 30px;
  }

  .panel {
    padding: 14px;
  }
}