/* ── Lock Enrol — Styles ───────────────────── */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #f59e0b;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.container {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 32px 28px;
  transition: all 0.2s ease;
}

/* ── Logo / Header ─────────────────────── */
.header {
  text-align: center;
  margin-bottom: 28px;
}

.header .icon {
  font-size: 48px;
  margin-bottom: 8px;
  display: block;
}

.header h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
}

.header p {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Screens (show/hide via JS) ────────── */
.screen {
  display: none;
}

.screen.active {
  display: block;
}

/* ── Code Input Screen ─────────────────── */
.code-input-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.code-input-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.code-input-wrapper {
  position: relative;
}

.code-input-wrapper input {
  width: 100%;
  padding: 16px 20px;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 12px;
  text-align: center;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s;
  background: var(--bg);
  font-family: "SF Mono", "Fira Code", "Courier New", monospace;
}

.code-input-wrapper input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.code-input-wrapper input::placeholder {
  letter-spacing: 2px;
  font-size: 16px;
  font-weight: 400;
  color: var(--text-muted);
}

.error-message {
  color: var(--danger);
  font-size: 13px;
  font-weight: 500;
  min-height: 20px;
}

/* ── Buttons ───────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s ease;
  width: 100%;
}

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

.btn-primary {
  background: var(--primary);
  color: white;
}

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

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-success {
  background: var(--success);
  color: white;
  font-size: 18px;
  padding: 18px 24px;
}

.btn-success:hover {
  background: #15803d;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover {
  background: #b91c1c;
}

.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 2px solid var(--border);
}

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

.btn-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

/* ── Unlock Screen ─────────────────────── */
.unlock-status {
  text-align: center;
  padding: 12px 0;
}

.unlock-status .lock-icon {
  font-size: 64px;
  display: block;
  margin-bottom: 12px;
}

.unlock-status h2 {
  font-size: 20px;
  margin-bottom: 4px;
}

.unlock-status p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.code-badge {
  display: inline-block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 16px;
  font-family: "SF Mono", "Fira Code", "Courier New", monospace;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 4px;
  margin-top: 8px;
}

/* ── Success Screen ────────────────────── */
.success-status {
  text-align: center;
  padding: 20px 0;
}

.success-status .check-icon {
  font-size: 72px;
  display: block;
  margin-bottom: 12px;
  animation: pop 0.4s ease;
}

.success-status h2 {
  font-size: 24px;
  color: var(--success);
  margin-bottom: 4px;
}

.success-status p {
  font-size: 14px;
  color: var(--text-muted);
}

@keyframes pop {
  0% { transform: scale(0); }
  60% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

/* ── States ────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.hidden {
  display: none !important;
}

/* ── Admin Login ───────────────────────── */
.admin-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.admin-form input[type="password"] {
  width: 100%;
  padding: 14px 16px;
  font-size: 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s;
}

.admin-form input[type="password"]:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* ── Admin Dashboard ───────────────────── */
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.admin-header h2 {
  font-size: 18px;
}

.admin-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.generate-row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.generate-row input[type="number"] {
  width: 80px;
  padding: 10px 12px;
  font-size: 14px;
  border: 2px solid var(--border);
  border-radius: 8px;
  outline: none;
  text-align: center;
}

.generate-row input[type="number"]:focus {
  border-color: var(--primary);
}

.generate-row .btn {
  width: auto;
  flex: 1;
}

.new-code-display {
  background: var(--bg);
  border: 2px dashed var(--success);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 8px;
  font-family: "SF Mono", "Fira Code", monospace;
  color: var(--success);
  margin-top: 8px;
  animation: pop 0.3s ease;
}

.code-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.code-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}

.code-item .code-value {
  font-family: "SF Mono", "Fira Code", monospace;
  font-weight: 600;
  letter-spacing: 2px;
}

.code-item .code-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  color: var(--text-muted);
  font-size: 12px;
}

.code-item .revoke-btn {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
}

.code-item .revoke-btn:hover {
  background: rgba(220, 38, 38, 0.1);
}

/* ── Responsive ────────────────────────── */
@media (max-width: 480px) {
  .container {
    padding: 24px 16px;
    border-radius: 0;
    box-shadow: none;
    min-height: 100vh;
  }

  body {
    padding: 0;
    background: var(--card);
  }
}