:root {
  --bg-canvas: #000000;
  --bg-card: #070D18;
  --bg-card-hover: #0D1929;
  --bg-elevated: #0F1F35;
  --border-subtle: #142338;
  --border-focus: #FF6500;
  --text-primary: #FFFFFF;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  
  --primary: #FF6500;
  --primary-hover: #FF8533;
  --primary-glow: rgba(255, 101, 0, 0.25);
  
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --success-border: rgba(16, 185, 129, 0.35);
  --success-glow: rgba(16, 185, 129, 0.25);
  
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --danger-border: rgba(239, 68, 68, 0.35);
  --danger-glow: rgba(239, 68, 68, 0.25);
  
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --warning-border: rgba(245, 158, 11, 0.35);
  
  --info: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.12);
  --info-border: rgba(59, 130, 246, 0.35);
  
  --code-bg: #04070D;
  --header-bg: rgba(0, 0, 0, 0.88);
  --btn-bg: #1e293b;
  --btn-bg-hover: #27354a;
  --btn-border: #334155;
  --btn-text: #FFFFFF;
  --font-mono: "JetBrains Mono", monospace;
  --font-sans: "Rubik", sans-serif;
}

[data-theme="light"] {
  --bg-canvas: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --bg-elevated: #F1F5F9;
  --border-subtle: #E2E8F0;
  --border-focus: #E65100;
  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #64748B;
  
  --primary: #E65100;
  --primary-hover: #FF6D00;
  --primary-glow: rgba(230, 81, 0, 0.20);
  
  --success: #059669;
  --success-bg: rgba(5, 150, 105, 0.10);
  --success-border: rgba(5, 150, 105, 0.30);
  --success-glow: rgba(5, 150, 105, 0.15);
  
  --danger: #DC2626;
  --danger-bg: rgba(220, 38, 38, 0.10);
  --danger-border: rgba(220, 38, 38, 0.30);
  --danger-glow: rgba(220, 38, 38, 0.15);
  
  --warning: #D97706;
  --warning-bg: rgba(217, 119, 6, 0.10);
  --warning-border: rgba(217, 119, 6, 0.30);
  
  --info: #2563EB;
  --info-bg: rgba(37, 99, 235, 0.10);
  --info-border: rgba(37, 99, 235, 0.30);
  
  --code-bg: #F1F5F9;
  --header-bg: rgba(255, 255, 255, 0.92);
  --btn-bg: #E2E8F0;
  --btn-bg-hover: #CBD5E1;
  --btn-border: #CBD5E1;
  --btn-text: #0F172A;
}

[data-theme="light"] body {
  background-color: var(--bg-canvas);
  background-image: none;
}

[data-theme="light"] .card {
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
}

.theme-icon-moon {
  display: none;
}

[data-theme="light"] .theme-icon-sun {
  display: none;
}

[data-theme="light"] .theme-icon-moon {
  display: inline-block !important;
}

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

html {
  height: 100%;
}

body {
  width: 100%;
  max-width: 100vw;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-canvas);
  background-image: 
    radial-gradient(ellipse 600px 200px at 50% 0%, rgba(255, 101, 0, 0.05), transparent 100%);
  background-repeat: no-repeat;
  background-position: top center;
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Container & Layout */
.portal-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 16px 36px;
  min-width: 0;
  flex: 1 0 auto;
}

/* Pinned Top Navigation Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}
.site-header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}
.site-logo-link:hover .site-logo-title {
  color: var(--primary);
}
.site-logo-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(255, 101, 0, 0.12);
  border: 1px solid rgba(255, 101, 0, 0.3);
  color: var(--primary);
  font-weight: 600;
}
.site-header-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-btn {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.nav-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-focus);
  background: var(--bg-card-hover);
}
.nav-github {
  font-family: var(--font-mono);
  font-size: 0.76rem;
}
.nav-github:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.sys-pill {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 5px 12px;
  border-radius: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}
.dot-live {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: pulse-green 2s infinite;
  flex-shrink: 0;
}
@keyframes pulse-green {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.9); }
}

/* Grid Layout */
.portal-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  width: 100%;
  min-width: 0;
}

@media (min-width: 980px) {
  .portal-grid {
    grid-template-columns: minmax(0, 440px) minmax(0, 1fr);
    align-items: start;
  }
}

.portal-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
  max-width: 100%;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 20px;
  min-width: 0;
  max-width: 100%;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  position: relative;
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.card h2 {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

/* Drag and Drop Zone */
.dropzone {
  border: 2px dashed var(--border-subtle);
  border-radius: 12px;
  padding: 28px 18px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--code-bg);
  position: relative;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary);
  background: rgba(255, 101, 0, 0.08);
  transform: translateY(-1px);
}

.dropzone-icon {
  font-size: 2.2rem;
  margin-bottom: 8px;
  display: inline-block;
  transition: transform 0.2s;
  color: var(--primary);
}

.dropzone:hover .dropzone-icon {
  transform: scale(1.08);
}

.dropzone p {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.dropzone p strong {
  color: var(--text-primary);
}

.dropzone .hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.dropzone input[type="file"] {
  display: none;
}

.format-tags {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 10px;
}

.format-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

/* Textarea & Inputs */
label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: block;
  margin-bottom: 6px;
}

textarea {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  height: 140px;
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.5;
  padding: 12px;
  resize: vertical;
  transition: border-color 0.2s;
  outline: none;
  word-break: break-all;
}

textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--primary-glow);
}

/* Buttons */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

button, .btn {
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid var(--btn-border);
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
}

button:hover, .btn:hover {
  background: var(--btn-bg-hover);
  border-color: var(--border-focus);
}

button.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #0b1320;
  font-weight: 700;
  box-shadow: 0 2px 10px var(--primary-glow);
}

button.primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-1px);
}

button.scenario-btn {
  flex: 1;
  min-width: 180px;
  padding: 8px 12px;
  font-size: 0.82rem;
  text-align: left;
  justify-content: flex-start;
  background: rgba(255, 255, 255, 0.03);
}

button.scenario-btn:hover {
  background: rgba(255, 255, 255, 0.07);
}

button.danger-outline {
  border-color: rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}

button.danger-outline:hover {
  background: var(--danger-bg);
  border-color: var(--danger);
}

/* Pinned Keys List */
.key-box {
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 12px;
  margin-top: 8px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  word-break: break-all;
}

.key-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.key-badge {
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid var(--success-border);
}

/* Verification Result Area */
#emptyState {
  text-align: center;
  padding: 50px 20px;
  color: var(--text-muted);
}

#emptyState .empty-icon {
  font-size: 3.2rem;
  opacity: 0.3;
  margin-bottom: 12px;
  display: inline-block;
}

/* Verdict Banner */
.result-banner {
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  border: 1px solid transparent;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.result-banner.authentic {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.16) 0%, rgba(16, 185, 129, 0.06) 100%);
  border-color: var(--success-border);
  color: #a7f3d0;
  box-shadow: 0 0 24px var(--success-glow);
}

.result-banner.tampered, .result-banner.invalid {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.18) 0%, rgba(239, 68, 68, 0.06) 100%);
  border-color: var(--danger-border);
  color: #fecaca;
  box-shadow: 0 0 24px var(--danger-glow);
}

.result-banner.untrusted {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.18) 0%, rgba(245, 158, 11, 0.06) 100%);
  border-color: var(--warning-border);
  color: #fde68a;
}

.result-banner.custom-key {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.18) 0%, rgba(59, 130, 246, 0.06) 100%);
  border-color: var(--info-border);
  color: #bfdbfe;
}

.banner-icon {
  font-size: 2.2rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.banner-text {
  min-width: 0;
  flex: 1;
}

.banner-text h3 {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.2px;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.banner-text p {
  font-size: 0.88rem;
  line-height: 1.45;
  opacity: 0.95;
  word-break: break-word;
}

/* Metric Summary Badges */
.metric-ribbon {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.metric-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px 12px;
  text-align: center;
}

.metric-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 4px;
  font-weight: 600;
}

.metric-val {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Section Subheaders */
.section-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  margin-top: 20px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.2px;
}

/* Property Table with Fixed Layout */
.table-container {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  margin-top: 8px;
}

.prop-table {
  width: 100%;
  table-layout: fixed;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  font-size: 0.86rem;
  min-width: 0;
}

.prop-table tr:not(:last-child) th,
.prop-table tr:not(:last-child) td {
  border-bottom: 1px solid var(--border-subtle);
}

.prop-table th {
  width: 36%;
  padding: 9px 12px;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-align: left;
  vertical-align: top;
  background: var(--code-bg);
  white-space: normal;
}

.prop-table td {
  width: 64%;
  padding: 9px 12px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  word-break: break-all;
  overflow-wrap: anywhere;
  vertical-align: top;
}

/* NIST Badges */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-clear { 
  background: rgba(59, 130, 246, 0.18); 
  color: #60a5fa; 
  border: 1px solid rgba(59, 130, 246, 0.4); 
}
.badge-purge { 
  background: rgba(16, 185, 129, 0.18); 
  color: #34d399; 
  border: 1px solid rgba(16, 185, 129, 0.4); 
}
.badge-destroy { 
  background: rgba(239, 68, 68, 0.18); 
  color: #f87171; 
  border: 1px solid rgba(239, 68, 68, 0.4); 
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
  margin-top: 24px;
  gap: 4px;
}

.tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  padding: 10px 16px;
  border-radius: 0;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background: rgba(255, 101, 0, 0.08);
}

.tab-content {
  display: none;
  margin-top: 14px;
  min-width: 0;
  max-width: 100%;
}

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

/* Code Viewers */
.code-wrapper {
  position: relative;
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

.code-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 8px;
}

.btn-copy {
  padding: 4px 10px;
  font-size: 0.75rem;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
}

pre {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 14px;
  overflow-x: auto;
  overflow-y: auto;
  max-height: 260px;
}

pre code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.81rem;
  line-height: 1.55;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-all;
  overflow-wrap: anywhere;
  max-width: 100%;
  min-width: 0;
}

/* Footer */
.portal-footer {
  margin-top: auto;
  padding: 24px 16px;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
  font-size: 0.84rem;
  color: var(--text-muted);
  background: var(--bg-canvas);
}
.portal-footer .footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
}
.portal-footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.portal-footer a:hover {
  text-decoration: underline;
}
.ascii-tag {
  font-family: var(--font-mono);
  font-weight: 700;
  margin-right: 4px;
}

/* Responsive */
@media (max-width: 1024px) {
  .portal-container {
    padding: 20px 14px 52px;
  }
  .portal-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }
}

@media (max-width: 600px) {
  .portal-container {
    padding: 12px 10px 40px;
  }
  .btn-group {
    flex-direction: column;
  }
  .btn-group button, .btn-group .btn {
    width: 100%;
    min-height: 42px;
    font-size: 0.88rem;
  }
  .scenario-btn {
    min-width: unset !important;
  }
  .result-banner {
    padding: 14px;
    gap: 12px;
  }
  .banner-icon {
    font-size: 1.7rem;
  }
  .banner-text h3 {
    font-size: 1.05rem;
  }
  .banner-text p {
    font-size: 0.8rem;
  }

  .prop-table, .prop-table tbody, .prop-table tr, .prop-table th, .prop-table td {
    display: block;
    width: 100% !important;
  }
  .prop-table tr {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-subtle);
  }
  .prop-table tr:not(:last-child) th,
  .prop-table tr:not(:last-child) td {
    border-bottom: none;
  }
  .prop-table th {
    padding: 0 0 3px 0 !important;
    font-size: 0.72rem !important;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    background: transparent !important;
  }
  .prop-table td {
    padding: 0 !important;
    font-size: 0.82rem !important;
    word-break: break-all;
  }
  textarea {
    font-size: 16px;
  }
}