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

:root {
  --bg: #0b0d12;
  --bg-glow: #141925;
  --surface: #161b25;
  --surface-2: #1e2532;
  --border: #28303f;
  --text: #e8ecf3;
  --text-muted: #8a93a6;
  --accent: #5b9dff;
  --accent-hover: #4385f5;
  --green: #34d399;
  --red: #f87171;
  --orange: #fbbf24;
  --shadow: 0 10px 40px -12px rgba(0, 0, 0, 0.7);
  --radius: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background:
    radial-gradient(900px 500px at 50% -10%, var(--bg-glow), transparent 70%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: clamp(2rem, 8vh, 5rem) 1rem 3rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.75rem;
  background: linear-gradient(180deg, var(--text), var(--text-muted));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  color: var(--text-muted);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  width: 100%;
  max-width: 400px;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
  animation: rise 0.4s ease both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.2s ease, opacity 0.2s ease, background 0.2s ease;
  color: #fff;
  width: 100%;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn-unlock {
  background: linear-gradient(180deg, var(--green), #10b981);
  font-size: 1.2rem;
  padding: 1.15rem;
  box-shadow: 0 8px 24px -8px rgba(52, 211, 153, 0.5);
}

.btn-primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-hover));
  box-shadow: 0 8px 24px -10px rgba(91, 157, 255, 0.6);
}

.btn-danger {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--red);
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 500;
  width: auto;
}

.btn-danger:hover {
  background: rgba(248, 113, 113, 0.12);
  border-color: rgba(248, 113, 113, 0.5);
  transform: none;
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(91, 157, 255, 0.25);
}

.btn-small {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  width: auto;
}

.status {
  text-align: center;
  padding: 0.5rem 0;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.status.unlocked {
  color: var(--green);
}

.status.locked {
  color: var(--text);
}

.status.expired {
  color: var(--red);
}

.countdown {
  text-align: center;
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--green);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  margin: 0.5rem 0;
}

.info {
  color: var(--text-muted);
  font-size: 0.875rem;
  text-align: center;
  margin-top: 0.5rem;
}

/* Admin styles */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.7rem 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text);
  font-size: 0.9rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group select:focus,
.login-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(91, 157, 255, 0.18);
}

.list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.list-item:last-child {
  border-bottom: none;
}

.list-item-info {
  flex: 1;
  min-width: 0;
}

.list-item-name {
  font-weight: 600;
}

.list-item-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  word-break: break-word;
}

.actions {
  display: flex;
  gap: 0.5rem;
}

.hidden {
  display: none;
}

.login-form {
  display: flex;
  gap: 0.5rem;
}

.login-form input {
  flex: 1;
  padding: 0.7rem 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.tab-bar {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
  background: var(--bg);
  padding: 0.3rem;
  border-radius: 11px;
  border: 1px solid var(--border);
}

.tab {
  flex: 1;
  padding: 0.5rem 1rem;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

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

.tab.active {
  background: var(--surface-2);
  color: var(--text);
}

.copy-btn {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.35rem 0.65rem;
  border-radius: 7px;
  cursor: pointer;
  font-size: 0.75rem;
  transition: color 0.15s ease, border-color 0.15s ease;
}

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