:root {
  --tg-blue: #2aabee;
  --tg-blue-dark: #229ed9;
  --bg: #0e1621;
  --card: #17212b;
  --text: #f5f5f5;
  --muted: #8b9aab;
  --border: #242f3d;
  --danger: #e53935;
  --radius: 16px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(1200px 600px at 50% -10%, #1b2a3a 0%, var(--bg) 55%);
  color: var(--text);
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px 28px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  text-align: center;
}

.logo {
  margin-bottom: 16px;
  line-height: 0;
}

h1 {
  margin: 0 0 8px;
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.subtitle {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.target {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0 0 20px;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: left;
}

.target .label {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.target code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88rem;
  word-break: break-all;
  color: #cde9ff;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease, border-color 0.12s ease;
  user-select: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn.primary {
  background: var(--tg-blue);
  color: #fff;
}

.btn.primary:hover {
  background: var(--tg-blue-dark);
}

.btn.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn.secondary:hover {
  border-color: var(--muted);
}

.btn.ghost {
  background: transparent;
  color: var(--muted);
  min-height: 40px;
  font-weight: 500;
}

.btn.ghost:hover {
  color: var(--text);
}

.btn.compact {
  min-height: 44px;
  padding: 0 16px;
  white-space: nowrap;
}

.hint {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.hint a {
  color: var(--tg-blue);
  text-decoration: none;
}

.hint a:hover {
  text-decoration: underline;
}

.home {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  text-align: left;
}

.home h2 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.home ul {
  margin: 0 0 18px;
  padding-left: 1.15rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.home code {
  color: #cde9ff;
  font-size: 0.84em;
  word-break: break-all;
}

.paste-form label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--muted);
}

.paste-form .row {
  display: flex;
  gap: 8px;
}

.paste-form input {
  flex: 1;
  min-width: 0;
  height: 44px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  font-size: 0.92rem;
  outline: none;
}

.paste-form input:focus {
  border-color: var(--tg-blue);
}

.error {
  margin: 16px 0 0;
  padding: 12px;
  border-radius: 10px;
  background: rgba(229, 57, 53, 0.12);
  color: #ff8a80;
  font-size: 0.9rem;
  line-height: 1.45;
}

@media (max-width: 380px) {
  .paste-form .row {
    flex-direction: column;
  }
}