/* ═══════════════════════════════════════════
   CASI Portal — Design System
   Adaptive Resonance Technologies LLC
   ═══════════════════════════════════════════ */

:root {
  /* Core palette */
  --bg-deep: #0a0e1a;
  --bg-surface: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(30, 41, 59, 0.8);

  --accent-primary: #6366f1;
  --accent-primary-glow: rgba(99, 102, 241, 0.25);
  --accent-secondary: #8b5cf6;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  --accent-danger-glow: rgba(239, 68, 68, 0.2);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-subtle: rgba(148, 163, 184, 0.12);
  --border-accent: rgba(99, 102, 241, 0.3);

  --glass-bg: rgba(15, 23, 42, 0.6);
  --glass-border: rgba(148, 163, 184, 0.08);
  --glass-blur: 20px;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px var(--accent-primary-glow);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Lato', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

html {
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Background mesh gradient */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(16, 185, 129, 0.04) 0%, transparent 50%);
}

/* ═══════════ HEADER ═══════════ */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(var(--glass-blur));
  background: var(--glass-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-glyph {
  font-size: 2rem;
  color: var(--accent-primary);
  text-shadow: 0 0 20px var(--accent-primary-glow);
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {

  0%,
  100% {
    text-shadow: 0 0 20px var(--accent-primary-glow);
  }

  50% {
    text-shadow: 0 0 40px var(--accent-primary-glow), 0 0 10px var(--accent-primary);
  }
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.logo-org {
  font-size: 0.6rem;
  color: var(--text-muted);
  opacity: 0.6;
  letter-spacing: 0.04em;
  margin-top: 0.1rem;
}

.session-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.session-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: var(--transition);
}

.session-indicator.active .session-dot {
  background: var(--accent-success);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

.session-indicator.active {
  color: var(--accent-success);
  border-color: rgba(16, 185, 129, 0.3);
}

/* ═══════════ TAB BAR ═══════════ */

.tab-bar {
  display: flex;
  gap: 0;
  padding: 0 2rem;
  background: var(--glass-bg);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(var(--glass-blur));
  overflow-x: auto;
}

.tab {
  position: relative;
  padding: 0.9rem 1.25rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

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

.tab.active {
  color: var(--accent-primary);
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 2px 2px 0 0;
}

.tab-admin {
  margin-left: auto;
  color: var(--accent-warning);
}

.tab-admin:hover {
  color: var(--accent-danger);
}

.tab-admin.active {
  color: var(--accent-danger);
}

.tab-admin.active::after {
  background: linear-gradient(90deg, var(--accent-warning), var(--accent-danger));
}

/* ═══════════ CONTENT / PANELS ═══════════ */

.content {
  max-width: 860px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

.tab-panel {
  display: none;
  animation: fadeSlideIn 0.4s ease;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ═══════════ CARD ═══════════ */

.card {
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.card.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-lg);
}

.card-danger {
  border-color: rgba(239, 68, 68, 0.15) !important;
  box-shadow: 0 0 60px var(--accent-danger-glow) !important;
}

.card-header {
  margin-bottom: 1.75rem;
}

.card-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

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

/* ═══════════ STEPPER ═══════════ */

.stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 1rem 0;
}

.step {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.step.active {
  color: var(--accent-primary);
}

.step.done {
  color: var(--accent-success);
}

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.75rem;
  border: 2px solid var(--text-muted);
  transition: var(--transition);
}

.step.active .step-num {
  border-color: var(--accent-primary);
  background: var(--accent-primary);
  color: white;
  box-shadow: 0 0 12px var(--accent-primary-glow);
}

.step.done .step-num {
  border-color: var(--accent-success);
  background: var(--accent-success);
  color: white;
}

.step-line {
  width: 40px;
  height: 2px;
  background: var(--border-subtle);
  border-radius: 1px;
}

/* ═══════════ STEP CONTENT ═══════════ */

.step-content {
  display: none;
  animation: fadeSlideIn 0.35s ease;
}

.step-content.active {
  display: block;
}

/* ═══════════ FORMS ═══════════ */

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.form-group textarea {
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.password-strength {
  height: 3px;
  margin-top: 0.5rem;
  border-radius: 2px;
  background: var(--border-subtle);
  overflow: hidden;
  transition: var(--transition);
}

.password-strength::after {
  content: '';
  display: block;
  height: 100%;
  width: var(--strength, 0%);
  background: var(--strength-color, var(--text-muted));
  border-radius: 2px;
  transition: var(--transition);
}

/* ═══════════ BUTTONS ═══════════ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  box-shadow: 0 4px 15px var(--accent-primary-glow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-primary-glow);
}

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

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

.btn-ghost:hover {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text-primary);
}

.btn-danger {
  background: linear-gradient(135deg, var(--accent-danger), #dc2626);
  color: white;
  box-shadow: 0 4px 15px var(--accent-danger-glow);
}

.btn-danger:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-danger-glow);
}

.btn-danger:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-icon {
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  cursor: pointer;
  font-size: 1.1rem;
  transition: var(--transition);
}

.btn-icon:hover {
  background: rgba(148, 163, 184, 0.2);
}

.btn-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

/* ═══════════ INFO BANNERS ═══════════ */

.info-banner {
  display: flex;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  margin-bottom: 1.5rem;
  align-items: flex-start;
}

.info-banner p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.info-banner strong {
  color: var(--text-primary);
}

.info-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.info-warning {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.15);
}

/* ═══════════ KEY DISPLAY ═══════════ */

.key-display {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
  overflow: hidden;
}

.key-display code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-primary);
  word-break: break-all;
  flex: 1;
  line-height: 1.6;
}

/* ═══════════ ESCROW POLICY ═══════════ */

.escrow-policy {
  padding: 1rem 1.25rem;
  background: rgba(16, 185, 129, 0.06);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.escrow-policy h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-success);
  margin-bottom: 0.4rem;
}

.escrow-policy p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ═══════════ SUCCESS BLOCK ═══════════ */

.success-block {
  text-align: center;
  padding: 2rem 1rem;
}

.success-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.success-block h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.success-block p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  max-width: 500px;
  margin-inline: auto;
}

/* ═══════════ DETAIL GRID ═══════════ */

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 1rem 0;
  text-align: left;
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.detail-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.detail-value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.detail-value.mono {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-primary);
}

.status-active {
  color: var(--accent-success) !important;
}

/* ═══════════ SESSION CARD ═══════════ */

.session-card {
  padding: 1rem 1.25rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  background: rgba(15, 23, 42, 0.4);
}

.section-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

/* ═══════════ EMPTY STATE ═══════════ */

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.6;
}

.empty-state h3 {
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.empty-state p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* ═══════════ CHECKLIST ═══════════ */

.checklist {
  margin-bottom: 1.5rem;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.check-item:hover {
  background: rgba(148, 163, 184, 0.05);
}

.check-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-primary);
  cursor: pointer;
}

/* ═══════════ SECURITY SECTIONS ═══════════ */

.security-sections {
  display: grid;
  gap: 1.25rem;
}

.sec-block {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: rgba(15, 23, 42, 0.3);
  transition: var(--transition);
}

.sec-block:hover {
  border-color: var(--border-accent);
  background: rgba(15, 23, 42, 0.5);
  transform: translateX(4px);
}

.sec-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  padding-top: 0.1rem;
}

.sec-block h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.sec-block p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ═══════════ ESCALATION GRID ═══════════ */

.escalation-grid {
  display: grid;
  gap: 1.25rem;
}

.esc-card {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: rgba(15, 23, 42, 0.4);
}

.esc-level-1 {
  border-left: 3px solid var(--accent-warning);
}

.esc-level-2 {
  border-left: 3px solid #f97316;
}

.esc-level-3 {
  border-left: 3px solid var(--accent-danger);
}

.esc-level-4 {
  border-left: 3px solid #dc2626;
  background: rgba(239, 68, 68, 0.04);
}

.esc-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.esc-level {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.esc-badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 100px;
}

.esc-reversible {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-success);
}

.esc-caution {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-warning);
}

.esc-nuclear {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-danger);
}

.esc-card h4 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.esc-card>p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.esc-steps ol {
  padding-left: 1.25rem;
  margin-bottom: 0.75rem;
}

.esc-steps li {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 0.3rem;
  line-height: 1.5;
}

.esc-steps code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.1rem 0.3rem;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 3px;
  color: var(--accent-primary);
}

.esc-effect {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-subtle);
  line-height: 1.5;
}

.esc-effect strong {
  color: var(--text-secondary);
}

/* ═══════════ FOOTER ═══════════ */

.footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border-subtle);
  margin-top: 3rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-note {
  font-size: 0.7rem;
  margin-top: 0.3rem;
  color: var(--text-muted);
  opacity: 0.7;
}

/* ═══════════ RESPONSIVE ═══════════ */

@media (max-width: 640px) {
  .header {
    padding: 1rem;
    flex-direction: column;
    gap: 0.75rem;
  }

  .tab-bar {
    padding: 0 0.5rem;
  }

  .tab {
    padding: 0.75rem 0.75rem;
    font-size: 0.78rem;
  }

  .content {
    padding: 0 1rem;
    margin: 1rem auto;
  }

  .card {
    padding: 1.25rem;
  }

  .stepper {
    flex-wrap: wrap;
    gap: 0.3rem;
  }

  .step-line {
    width: 20px;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }

  .btn-row {
    flex-direction: column;
  }

  .sec-block {
    flex-direction: column;
  }
}