/* === Pretera Security Challenge — Power2HR ===
   Brand palette derived from pretera.com:
   - deep purple #200A4A / #401E82
   - mid purple  #4C18B0 / #6C35AD
   - bright purple #9C4EDC
   - orange accent #FB3D24 / #FF8A00
*/
:root {
  --primary: #0a0414;
  --primary-light: #160826;
  --accent: #9C4EDC;
  --accent-hover: #B567ED;
  --accent-dim: rgba(156, 78, 220, 0.12);
  --accent-deep: #4C18B0;
  --accent-deeper: #401E82;
  --highlight: #FB3D24;
  --highlight-dim: rgba(251, 61, 36, 0.12);
  --danger: #FB3D24;
  --danger-dim: rgba(251, 61, 36, 0.12);
  --warning: #FF8A00;
  --text: #f3eaff;
  --text-muted: #9b8ab2;
  --surface: #160826;
  --surface-hover: #1f0d35;
  --border: #2a1547;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(64, 30, 130, 0.35);
  --gradient: linear-gradient(135deg, #401E82 0%, #6C35AD 50%, #9C4EDC 100%);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:
    radial-gradient(circle at 20% 0%, rgba(76, 24, 176, 0.18) 0%, transparent 50%),
    radial-gradient(circle at 80% 100%, rgba(156, 78, 220, 0.10) 0%, transparent 50%),
    var(--primary);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* --- Layout --- */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

header {
  text-align: center;
  padding: 30px 20px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 30px;
  position: relative;
}

header .brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  text-decoration: none;
  transition: transform 0.2s, filter 0.2s;
}

header .brand-logo:hover {
  transform: translateY(-1px);
  filter: drop-shadow(0 4px 12px rgba(156, 78, 220, 0.35));
}

header .brand-logo img {
  height: 42px;
  width: auto;
  display: block;
}

header h1 {
  font-size: 1.9rem;
  font-weight: 800;
  background: linear-gradient(135deg, #f3eaff 0%, #9C4EDC 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 6px;
}

header .subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
}

header .event-badge {
  display: inline-block;
  background: var(--gradient);
  color: white;
  padding: 5px 16px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
  margin-top: 14px;
  letter-spacing: 0.3px;
  box-shadow: 0 4px 14px rgba(64, 30, 130, 0.4);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 2px 10px rgba(64, 30, 130, 0.35);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(156, 78, 220, 0.45);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
}

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

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

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

/* --- Cards --- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  transition: all 0.2s;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 24px rgba(156, 78, 220, 0.08);
}

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.card p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* --- Forms --- */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

/* --- Registration --- */
#registration-screen {
  max-width: 440px;
  margin: 60px auto;
}

#registration-screen .card {
  padding: 32px;
}

#registration-screen h2 {
  text-align: center;
  margin-bottom: 24px;
  font-size: 1.4rem;
}

/* --- Challenge Hub --- */
.challenge-grid {
  display: grid;
  gap: 16px;
}

.challenge-card {
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.challenge-card .challenge-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.challenge-card .difficulty {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 8px;
}

.difficulty-easy {
  background: rgba(156, 78, 220, 0.18);
  color: var(--accent);
}

.difficulty-medium {
  background: rgba(255, 165, 2, 0.15);
  color: var(--warning);
}

.difficulty-hard {
  background: rgba(255, 71, 87, 0.15);
  color: var(--danger);
}

.challenge-card .status-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-completed {
  background: rgba(156, 78, 220, 0.2);
  color: var(--accent);
}

.status-locked {
  background: rgba(136, 153, 170, 0.15);
  color: var(--text-muted);
}

.points-badge {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 700;
  margin-top: 6px;
}

/* --- Phishing Challenge --- */
.email-preview {
  background: #fff;
  color: #333;
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  border: 2px solid transparent;
  transition: border-color 0.3s;
}

.email-preview.selected-phishing {
  border-color: var(--danger);
}

.email-preview.selected-legitimate {
  border-color: var(--accent);
}

.email-header {
  padding: 16px 20px;
  background: #f5f5f5;
  border-bottom: 1px solid #e0e0e0;
}

.email-from {
  font-weight: 700;
  font-size: 0.9rem;
  color: #333;
}

.email-from-address {
  font-size: 0.8rem;
  color: #777;
}

.email-subject {
  font-weight: 600;
  font-size: 0.95rem;
  margin-top: 4px;
  color: #111;
}

.email-body {
  padding: 20px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: #444;
}

.email-body a {
  color: #1a73e8;
  text-decoration: underline;
  pointer-events: none;
}

.email-actions {
  padding: 12px 20px;
  display: flex;
  gap: 8px;
  background: #fafafa;
  border-top: 1px solid #eee;
}

.email-actions .btn {
  flex: 1;
  padding: 8px;
  font-size: 0.8rem;
}

.flag-checkboxes {
  padding: 12px 20px;
  background: #fff8e8;
  border-top: 1px solid #eee;
  display: none;
}

.flag-checkboxes.visible {
  display: block;
}

.flag-checkboxes label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 0.85rem;
  color: #555;
  cursor: pointer;
}

.flag-checkboxes input[type="checkbox"] {
  accent-color: var(--danger);
}

/* === Evidence-based HR Portal challenge === */
.vuln-evidence-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.vuln-evidence-item:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.vuln-evidence-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.vuln-evidence-num {
  background: var(--gradient);
  color: white;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 999px;
  flex-shrink: 0;
  margin-top: 2px;
}

.vuln-evidence-title-wrap { flex: 1; }

.vuln-evidence-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.vuln-evidence-prompt {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.vuln-evidence-points {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 700;
  white-space: nowrap;
  background: var(--accent-dim);
  padding: 4px 10px;
  border-radius: 6px;
  flex-shrink: 0;
}

.vuln-evidence-input {
  width: 100%;
  padding: 11px 14px;
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.92rem;
  font-family: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.vuln-evidence-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.vuln-evidence-input::placeholder {
  color: rgba(155, 138, 178, 0.5);
  font-style: italic;
}

/* --- HR Portal Challenge --- */
.hr-portal-sim {
  background: #f0f2f5;
  border-radius: var(--radius);
  overflow: hidden;
  color: #333;
}

.portal-header {
  background: #2c5282;
  color: white;
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.portal-header h3 {
  font-size: 1rem;
  color: white;
}

.portal-address-bar {
  background: #fff;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid #ddd;
  font-size: 0.8rem;
  color: #666;
  font-family: monospace;
}

.portal-address-bar .http-warning {
  color: var(--danger);
  font-weight: 700;
}

.portal-content {
  padding: 20px;
}

.portal-sidebar {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 0;
}

.portal-nav {
  background: #e8ecf0;
  padding: 16px;
}

.portal-nav a {
  display: block;
  padding: 8px 12px;
  color: #2c5282;
  text-decoration: none;
  font-size: 0.85rem;
  border-radius: 4px;
  margin-bottom: 4px;
  cursor: pointer;
}

.portal-nav a:hover {
  background: #d5dbe3;
}

.portal-nav a.admin-link {
  color: var(--danger);
  font-weight: 600;
}

.portal-main {
  padding: 20px;
}

.portal-widget {
  background: white;
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.portal-widget h4 {
  font-size: 0.9rem;
  color: #333;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid #eee;
}

.sticky-note {
  background: #fff9c4;
  padding: 12px;
  border-radius: 4px;
  font-family: 'Comic Sans MS', cursive;
  font-size: 0.85rem;
  transform: rotate(-1deg);
  box-shadow: 2px 2px 6px rgba(0,0,0,0.1);
  color: #333;
}

.password-field-visible {
  font-family: monospace;
  background: #f5f5f5;
  padding: 8px;
  border-radius: 4px;
  color: #333;
}

.salary-table {
  width: 100%;
  font-size: 0.8rem;
  border-collapse: collapse;
}

.salary-table th, .salary-table td {
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid #eee;
  color: #444;
}

.salary-table th {
  background: #f5f5f5;
  font-weight: 600;
}

.vulnerability-checklist {
  margin-top: 20px;
}

.vuln-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.vuln-item:hover {
  border-color: var(--accent);
}

.vuln-item.selected {
  border-color: var(--danger);
  background: var(--danger-dim);
}

.vuln-item input[type="checkbox"] {
  accent-color: var(--danger);
  width: 18px;
  height: 18px;
}

.vuln-item label {
  cursor: pointer;
  font-size: 0.9rem;
}

/* --- Hint System --- */
.vuln-finder-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
  transition: all 0.2s;
}

.vuln-finder-item.found {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.vuln-finder-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
}

.vuln-finder-header input[type="checkbox"] {
  accent-color: var(--accent);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.vuln-finder-title {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 600;
}

.vuln-finder-points {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 700;
  white-space: nowrap;
}

.vuln-finder-points.reduced {
  color: var(--warning);
}

.hint-btn {
  padding: 4px 12px;
  background: rgba(255, 165, 2, 0.15);
  color: var(--warning);
  border: 1px solid rgba(255, 165, 2, 0.3);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.hint-btn:hover {
  background: rgba(255, 165, 2, 0.25);
}

.hint-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.hint-content {
  display: none;
  padding: 0 16px 14px 46px;
}

.hint-content.visible {
  display: block;
}

.hint-bubble {
  background: rgba(255, 165, 2, 0.08);
  border: 1px solid rgba(255, 165, 2, 0.15);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 6px;
}

.hint-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--warning);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 3px;
}

.hint-text {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.hint-cost {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  padding-left: 2px;
}

/* --- Social Engineering Challenge --- */
.scenario-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.scenario-number {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.scenario-card .question {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  line-height: 1.5;
}

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

.choice-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.choice-item:hover {
  border-color: var(--accent);
  background: var(--primary-light);
}

.choice-item.selected {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.choice-item input[type="radio"] {
  accent-color: var(--accent);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.choice-item label {
  cursor: pointer;
  font-size: 0.9rem;
}

/* --- Results --- */
.results-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 20px;
}

.results-panel h3 {
  text-align: center;
  margin-bottom: 20px;
}

.score-display {
  text-align: center;
  margin-bottom: 24px;
}

.score-big {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
}

.score-max {
  font-size: 1.2rem;
  color: var(--text-muted);
}

.feedback-item {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  border-left: 4px solid;
}

.feedback-correct {
  background: var(--accent-dim);
  border-color: var(--accent);
}

.feedback-incorrect {
  background: var(--danger-dim);
  border-color: var(--danger);
}

.feedback-item .feedback-title {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.feedback-item .feedback-explanation {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- Leaderboard (grouped by day) --- */
.leaderboard-days {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.day-group {
  background: var(--primary-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  position: relative;
}

.day-group.is-current {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-dim), 0 8px 30px rgba(156, 78, 220, 0.12);
}

.day-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 4px 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}

.day-badge {
  background: var(--gradient);
  color: white;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.day-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
}

.day-count {
  margin-left: auto;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
}

.leaderboard-table th {
  text-align: left;
  padding: 12px 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}

.leaderboard-table td {
  padding: 14px 16px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
}

.leaderboard-table tr:hover td {
  background: var(--surface-hover);
}

.rank-cell {
  font-weight: 800;
  width: 50px;
}

.rank-1 { color: #ffd700; }
.rank-2 { color: #c0c0c0; }
.rank-3 { color: #cd7f32; }

.score-bar {
  background: var(--primary);
  border-radius: 4px;
  height: 8px;
  overflow: hidden;
  margin-top: 4px;
}

.score-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  transition: width 0.5s ease;
}

.challenges-badges {
  display: flex;
  gap: 4px;
}

.mini-badge {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.mini-badge.completed {
  background: var(--accent);
}

/* --- Navigation tabs --- */
.nav-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 4px;
  border: 1px solid var(--border);
}

.nav-tab {
  flex: 1;
  padding: 10px 16px;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

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

.nav-tab.active {
  background: var(--gradient);
  color: white;
}

/* --- Screens --- */
.screen {
  display: none;
}

.screen.active {
  display: block;
}

/* --- Utilities --- */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-12 { margin-bottom: 12px; }
.mb-24 { margin-bottom: 24px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.alert-error {
  background: var(--danger-dim);
  color: var(--danger);
  border: 1px solid rgba(255, 71, 87, 0.2);
}

.alert-success {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(0, 229, 160, 0.2);
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .container { padding: 12px; }
  header h1 { font-size: 1.4rem; }
  .portal-sidebar { grid-template-columns: 1fr; }
  .portal-nav { display: flex; flex-wrap: wrap; gap: 4px; padding: 8px; }
  .portal-nav a { padding: 6px 10px; font-size: 0.75rem; }
  .leaderboard-table { font-size: 0.8rem; }
  .leaderboard-table th, .leaderboard-table td { padding: 8px; }
}

/* --- Loading spinner --- */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Progress bar at top */
.progress-summary {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 24px;
  padding: 16px 20px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.progress-summary .progress-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.progress-summary .progress-bar {
  flex: 1;
  height: 8px;
  background: var(--primary);
  border-radius: 4px;
  overflow: hidden;
}

.progress-summary .progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  transition: width 0.5s ease;
}

.progress-summary .progress-score {
  font-weight: 700;
  color: var(--accent);
  font-size: 0.95rem;
  white-space: nowrap;
}