:root {
  --bg-1: #071224;
  --bg-2: #0a1a2f;
  --card: rgba(10, 21, 38, 0.82);
  --text: #eaf3ff;
  --muted: #9cb2cc;
  --line: rgba(138, 181, 220, 0.24);
  --accent: #27b1ff;
  --accent-2: #1d8fe6;
  --danger: #ff8d8d;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 5%, rgba(76, 191, 255, 0.22), transparent 26%),
    radial-gradient(circle at 86% 88%, rgba(47, 141, 255, 0.16), transparent 32%),
    linear-gradient(165deg, var(--bg-1) 0%, var(--bg-2) 65%, #091525 100%);
  min-height: 100vh;
  padding: 24px;
}

.panel-shell {
  width: min(640px, 100%);
  margin: 0 auto;
  padding-top: 10px;
}

.btn {
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 11px 18px;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-secondary {
  color: var(--text);
  border-color: rgba(128, 211, 255, 0.35);
  background: rgba(17, 30, 48, 0.55);
  margin-bottom: 16px;
}

.btn-primary {
  border: 0;
  color: #041424;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.panel-card {
  display: block;
  position: relative;
  z-index: 2;
  margin-top: 6px;
  min-height: 220px;
  padding: 26px;
  border-radius: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.35);
}

.panel-card h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 8px;
}

.panel-card > p {
  color: var(--muted);
  margin-bottom: 16px;
}

.panel-form {
  display: grid;
  gap: 8px;
}

.panel-form label {
  font-size: 0.9rem;
  color: #c3d9ef;
}

.panel-form input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(5, 16, 31, 0.7);
  color: var(--text);
  padding: 12px;
  font: inherit;
  outline: none;
}

.panel-form input:focus {
  border-color: rgba(39, 177, 255, 0.7);
  box-shadow: 0 0 0 3px rgba(39, 177, 255, 0.18);
}

.status {
  min-height: 20px;
  font-size: 0.88rem;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
}

#verify-btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 700;
  color: #041424;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  cursor: pointer;
}

.details-box {
  margin-top: 16px;
  border: 1px solid var(--line);
  background: rgba(9, 23, 41, 0.72);
  border-radius: 14px;
  padding: 14px;
}

.details-box p {
  color: #cfe4fa;
  margin-bottom: 10px;
}

.hidden {
  display: none;
}