:root {
  --bg: #f2eadb;
  --bg-accent: #d8e7d1;
  --panel: rgba(250, 246, 238, 0.92);
  --line: rgba(28, 42, 29, 0.12);
  --ink: #18251b;
  --muted: #5c6b60;
  --green: #204f36;
  --green-soft: #d8ead6;
  --amber: #d19a42;
  --red: #b44b43;
  --shadow: 0 24px 60px rgba(23, 35, 24, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background: linear-gradient(140deg, var(--bg) 0%, #f7f3e8 45%, var(--bg-accent) 100%);
  min-height: 100vh;
}

.background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.72), transparent 34%),
    radial-gradient(circle at bottom right, rgba(32, 79, 54, 0.12), transparent 28%);
}

.shell {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}

.hero {
  margin-bottom: 28px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--green);
  margin: 0 0 10px;
}

.hero h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 0.95;
  max-width: 760px;
  margin: 0 0 12px;
}

.lead {
  max-width: 700px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.content-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  padding: 22px;
}

.panel h2,
.panel h3,
.panel p {
  margin-top: 0;
}

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

.session-form {
  width: min(780px, 100%);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 12px;
}

.field-span-2 {
  grid-column: span 2;
}

label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 8px;
  color: var(--muted);
}

.row,
.session-actions,
.qr-actions,
.section-header,
.session-top {
  display: flex;
  gap: 12px;
}

.row {
  align-items: center;
}

.row-submit {
  justify-content: flex-end;
  margin-top: 16px;
}

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

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(28, 42, 29, 0.18);
  background: rgba(255, 255, 255, 0.78);
  border-radius: 16px;
  padding: 14px 16px;
  color: var(--ink);
}

textarea {
  min-height: 110px;
  resize: vertical;
}

.field-note {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.session-config-section {
  margin-top: 6px;
  padding: 18px 18px 4px;
  border: 1px dashed rgba(28, 42, 29, 0.16);
  border-radius: 22px;
  background: rgba(216, 231, 209, 0.26);
}

.section-copy h3 {
  margin-bottom: 6px;
}

.section-copy p {
  margin: 0;
  color: var(--muted);
}

button {
  border: none;
  border-radius: 16px;
  padding: 13px 18px;
  cursor: pointer;
  transition: transform 0.16s ease, opacity 0.16s ease, background 0.16s ease;
  background: var(--green);
  color: #f5f1e6;
  font-weight: 700;
}

button:hover {
  transform: translateY(-1px);
}

button.ghost {
  background: rgba(32, 79, 54, 0.08);
  color: var(--green);
}

button.danger {
  background: rgba(180, 75, 67, 0.14);
  color: var(--red);
}

.section-header {
  justify-content: space-between;
  align-items: start;
  margin-bottom: 18px;
}

.sessions-list {
  display: grid;
  gap: 14px;
}

.messages-debug {
  display: grid;
  gap: 14px;
}

.session-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.55);
}

.session-card h3 {
  margin-bottom: 4px;
}

.session-card p {
  margin: 0;
  color: var(--muted);
}

.session-card p + p {
  margin-top: 6px;
}

.message-debug-body {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.84rem;
  line-height: 1.45;
  padding: 14px;
  border-radius: 18px;
  background: rgba(24, 37, 27, 0.05);
  color: var(--ink);
}

.session-top {
  justify-content: space-between;
  align-items: start;
  margin-bottom: 14px;
}

.session-actions {
  flex-wrap: wrap;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 11px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  background: rgba(32, 79, 54, 0.12);
  color: var(--green);
}

.status-connecting {
  background: rgba(209, 154, 66, 0.18);
  color: #845a18;
}

.status-connected {
  background: var(--green-soft);
  color: var(--green);
}

.status-disconnected {
  background: rgba(180, 75, 67, 0.14);
  color: var(--red);
}

.empty-state {
  border: 1px dashed rgba(28, 42, 29, 0.18);
  border-radius: 22px;
  padding: 28px 20px;
  color: var(--muted);
  text-align: center;
  background: rgba(255, 255, 255, 0.36);
}

.qr-view {
  display: grid;
  gap: 16px;
}

.qr-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

#qr-canvas {
  width: min(100%, 280px);
  height: auto;
  justify-self: center;
  border-radius: 22px;
  background: #f7f3e8;
  padding: 16px;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  padding: 14px 18px;
  border-radius: 16px;
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow);
}

.toast.error {
  background: var(--red);
}

.hidden {
  display: none;
}

@media (max-width: 920px) {
  .content-grid {
    grid-template-columns: 1fr;
  }

  .panel-form,
  .row,
  .row-submit {
    flex-direction: column;
    align-items: stretch;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .field-span-2 {
    grid-column: auto;
  }
}