:root {
  color-scheme: dark;
  --bg: #0b0d10;
  --panel: #151922;
  --panel-2: #1d2430;
  --border: rgba(255, 255, 255, 0.1);
  --text: #f3f6fb;
  --muted: #96a0b5;
  --soft: #687287;
  --accent: #33d6a6;
  --accent-2: #4ea1ff;
  --danger: #ff6b6b;
  --warning: #ffca67;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(51, 214, 166, 0.08), transparent 36%),
    linear-gradient(225deg, rgba(78, 161, 255, 0.08), transparent 32%),
    var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

.shell {
  width: min(760px, calc(100% - 28px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #07100d;
  font-weight: 900;
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
}

.brand-tag,
.hint,
.label,
p {
  color: var(--muted);
}

.brand-tag {
  font-size: 12px;
  margin-top: 2px;
}

.status-pill {
  border: 1px solid rgba(51, 214, 166, 0.35);
  color: var(--accent);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
}

.panel {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015)), var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 14px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

.panel-head {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 22px;
}

.panel-head.compact {
  margin-bottom: 16px;
}

.step {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--accent);
  font-weight: 800;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

h1,
h2 {
  margin: 0 0 8px;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(28px, 6vw, 48px);
  line-height: 1.08;
}

h2 {
  font-size: 28px;
}

p {
  margin: 0;
  line-height: 1.8;
}

.redeem-form label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
}

.input-row {
  display: grid;
  grid-template-columns: 1fr 128px;
  gap: 10px;
}

input,
button,
textarea {
  font: inherit;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: #0e1218;
  color: var(--text);
  border-radius: 8px;
  outline: none;
}

input {
  height: 54px;
  padding: 0 16px;
  font-size: 18px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

textarea {
  min-height: 170px;
  padding: 14px;
  resize: vertical;
  margin-top: 12px;
}

button {
  height: 54px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #07100d;
  font-weight: 800;
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  min-width: 112px;
}

.primary-small {
  background: var(--accent-2);
  color: #06101c;
}

.hint {
  margin-top: 12px;
  font-size: 13px;
}

.number-box,
.metric,
.sms-card {
  background: #0e1218;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.number-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px;
}

.label {
  font-size: 12px;
  margin-bottom: 7px;
}

.phone {
  font-size: clamp(28px, 7vw, 46px);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-weight: 800;
}

.wait-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin: 12px 0;
}

.session-actions {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  margin: 0 0 12px;
}

.metric {
  padding: 16px;
}

.value {
  font-size: 20px;
  font-weight: 800;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.sms-card {
  padding: 18px;
}

.sms-card.received {
  border-color: rgba(51, 214, 166, 0.5);
}

.sms-card.failed {
  border-color: rgba(255, 107, 107, 0.55);
}

.sms-text {
  color: var(--text);
  line-height: 1.7;
  word-break: break-word;
}

.code {
  margin-top: 14px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: clamp(34px, 10vw, 64px);
  color: var(--accent);
  font-weight: 900;
}

.admin-panel {
  opacity: 0.92;
}

summary {
  cursor: pointer;
  color: var(--muted);
  font-weight: 700;
}

.admin-grid {
  display: grid;
  grid-template-columns: 1fr 110px 110px;
  gap: 10px;
  margin-top: 16px;
}

.hidden {
  display: none;
}

@media (max-width: 620px) {
  .hero,
  .number-box {
    align-items: stretch;
    flex-direction: column;
  }

  .input-row,
  .wait-grid,
  .session-actions,
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 18px;
  }
}