:root {
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --card: #f7f7f8;
  --line: #e5e7eb;
  --shadow: 0 14px 40px rgba(17, 24, 39, 0.08);
  /* Corner radius: set to 0 for a sharper, more cornered look. */
  --r: 0px;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: radial-gradient(1100px 600px at 50% -10%, #f1f3f5 0%, #ffffff 55%) no-repeat;
  color: var(--text);
  font-family: ui-sans-serif, system-ui, "SF Pro Display", "Segoe UI Variable", "Segoe UI", "Helvetica Neue", sans-serif;
}

.wrap {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 28px 16px;
  gap: 16px;
}

.card {
  width: min(760px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  padding: 22px;
}

.top h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.top p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.35;
}

.form {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.label {
  font-size: 12px;
  color: var(--muted);
}

.input {
  width: 100%;
  border: 1px solid var(--line);
  background: #ffffff;
  border-radius: var(--r);
  padding: 12px 14px;
  font-size: 14px;
  outline: none;
  transition: box-shadow 140ms ease, border-color 140ms ease, transform 140ms ease;
}

.input:focus {
  border-color: #cbd5e1;
  box-shadow: 0 0 0 4px rgba(148, 163, 184, 0.35);
}

.btn {
  border: 1px solid #d1d5db;
  background: #111827;
  color: #ffffff;
  border-radius: var(--r);
  padding: 12px 14px;
  font-size: 14px;
  cursor: pointer;
  transition: transform 120ms ease, opacity 120ms ease, box-shadow 120ms ease;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0px); opacity: 0.92; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.status {
  min-height: 18px;
  font-size: 13px;
  color: var(--muted);
}

.status.error { color: #991b1b; }
.status.ok { color: #065f46; }

.result {
  margin-top: 16px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.resultTop {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.resultTop h2 {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  font-weight: 600;
}

.link {
  font-size: 13px;
  color: #111827;
  text-decoration: none;
  border-bottom: 1px solid rgba(17, 24, 39, 0.18);
}

.link:hover { border-bottom-color: rgba(17, 24, 39, 0.55); }

.video {
  width: 100%;
  max-height: min(62vh, 520px);
  border-radius: var(--r);
  border: 1px solid var(--line);
  background: #ffffff;
}

.foot {
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}