:root {
  --bg-start: #eef8ff;
  --bg-end: #fff9ed;
  --card: #ffffff;
  --text: #122038;
  --muted: #4c5f7a;
  --accent: #0f6fff;
  --accent-dark: #0b57ca;
  --border: #d7e1ee;
  --shadow: 0 16px 40px rgba(18, 32, 56, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: linear-gradient(140deg, var(--bg-start), var(--bg-end));
  display: grid;
  place-items: center;
  padding: 1rem;
}

.app {
  width: min(760px, 100%);
  display: grid;
  gap: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1.2rem;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 0.25rem;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
}

.subtext {
  margin: 0.35rem 0 1rem;
  color: var(--muted);
}

.timer {
  margin: 0.5rem 0 1rem;
  font-size: clamp(2rem, 10vw, 4.2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.btn {
  border: 1px solid var(--border);
  background: #f7f9fc;
  color: var(--text);
  padding: 0.7rem 1rem;
  border-radius: 12px;
  font-size: 0.95rem;
  cursor: pointer;
}

.btn:hover {
  border-color: #b6c6db;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

.share {
  display: grid;
  gap: 0.6rem;
}

label {
  font-size: 0.9rem;
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem 0.85rem;
  background: #fff;
}

textarea {
  resize: vertical;
}

.links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.6rem;
}

.share-link {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #f7f9fc;
  padding: 0.7rem 0.8rem;
  color: var(--text);
  font-weight: 600;
}

.share-link:hover {
  border-color: #b6c6db;
  background: #f0f5fc;
}

.hidden {
  display: none;
}

@media (max-width: 480px) {
  .card {
    border-radius: 16px;
    padding: 1rem;
  }
}