/* ==========================================================================
   CyberSecurity Study Hubs — Executive Portal CSS
   Visual Design System aligned with eSOC and eCTHP Interactive Hubs
   ========================================================================== */

:root {
  --bg: #090a0f;
  --bg-soft: #10111a;
  --panel: rgba(24, 25, 36, 0.88);
  --panel-2: rgba(31, 32, 45, 0.82);
  --panel-solid: #151622;
  --border: rgba(255, 255, 255, 0.08);
  --border-bright: rgba(255, 255, 255, 0.16);
  --border-cyan: rgba(34, 211, 238, 0.3);
  --border-blue: rgba(59, 130, 246, 0.3);
  --text: #f7f7fb;
  --muted: #a9acbd;
  --faint: #64687d;
  --purple: #3b82f6;
  --purple-2: #60a5fa;
  --cyan: #22d3ee;
  --green: #4ade80;
  --amber: #fbbf24;
  --red: #fb7185;
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow-blue: 0 0 35px rgba(59, 130, 246, 0.2);
  --shadow-glow-cyan: 0 0 35px rgba(34, 211, 238, 0.2);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  margin: 0;
  color: var(--text);
  background-color: var(--bg);
  background:
    radial-gradient(ellipse at 15% -5%, rgba(59, 130, 246, 0.18), transparent 45rem),
    radial-gradient(ellipse at 85% 105%, rgba(34, 211, 238, 0.12), transparent 45rem),
    linear-gradient(135deg, #0c0e17 0%, #090a0f 50%, #06070a 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Subtle background grid */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

.portal-container {
  position: relative;
  z-index: 1;
  max-width: 1440px;
  margin: 0 auto;
  padding: 1.5rem 2rem 4rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header & Top Bar */
.top-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.75rem;
  background: var(--panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--text);
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(34, 211, 238, 0.25));
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
}

.brand-info h1 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-info p {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.25);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.02em;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.95rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.09);
  color: var(--text);
  border-color: var(--border-bright);
}

/* Segmented View Switcher */
.view-tabs {
  display: flex;
  background: var(--panel-2);
  padding: 0.3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  gap: 0.3rem;
  margin-bottom: 2rem;
  width: fit-content;
  align-self: center;
  box-shadow: var(--shadow-md);
}

.tab-btn {
  padding: 0.55rem 1.25rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: var(--transition);
}

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

.tab-btn.active {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(34, 211, 238, 0.2));
  color: var(--text);
  border: 1px solid var(--border-cyan);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

/* Views Management */
.view-panel {
  display: none;
  animation: fadeIn 0.3s ease-in-out forwards;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hero Section */
.hero {
  text-align: center;
  max-width: 900px;
  margin: 0 auto 3rem;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid var(--border-blue);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--purple-2);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3.1rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.15rem;
  background: linear-gradient(135deg, #ffffff 30%, #a9acbd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title span.accent-cyan {
  background: linear-gradient(135deg, var(--cyan), var(--purple-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 750px;
  margin: 0 auto 2rem;
  line-height: 1.65;
}

/* Stats Matrix */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.stat-card {
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  text-align: left;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
}

.stat-val {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.stat-val span.unit {
  font-size: 0.9rem;
  color: var(--cyan);
  font-weight: 600;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

/* Dual Hub Cards Grid */
.hubs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

@media (max-width: 600px) {
  .hubs-grid {
    grid-template-columns: 1fr;
  }
}

.hub-card {
  background: var(--panel);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
}

.hub-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  transition: var(--transition);
}

.hub-card.esoc:hover {
  border-color: var(--border-blue);
  box-shadow: var(--shadow-glow-blue);
  transform: translateY(-4px);
}
.hub-card.esoc::before {
  background: linear-gradient(90deg, var(--purple), var(--purple-2));
}

.hub-card.ecthp:hover {
  border-color: var(--border-cyan);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-4px);
}
.hub-card.ecthp::before {
  background: linear-gradient(90deg, var(--cyan), #38bdf8);
}

.hub-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.hub-badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
}

.hub-card.esoc .hub-badge {
  background: rgba(59, 130, 246, 0.15);
  color: var(--purple-2);
  border: 1px solid var(--border-blue);
}

.hub-card.ecthp .hub-badge {
  background: rgba(34, 211, 238, 0.15);
  color: var(--cyan);
  border: 1px solid var(--border-cyan);
}

.hub-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

.hub-card.esoc .hub-icon-wrapper {
  color: var(--purple-2);
  border-color: var(--border-blue);
}

.hub-card.ecthp .hub-icon-wrapper {
  color: var(--cyan);
  border-color: var(--border-cyan);
}

.hub-title {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.hub-subtitle {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.hub-summary {
  font-size: 0.92rem;
  color: #c7cad6;
  line-height: 1.6;
  margin-bottom: 1.75rem;
  flex-grow: 1;
}

.hub-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.tag-pill {
  font-size: 0.75rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.65rem;
}

.hub-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-primary {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.88rem;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.hub-card.esoc .btn-primary {
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  color: #fff;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

.hub-card.esoc .btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
  transform: translateY(-1px);
}

.hub-card.ecthp .btn-primary {
  background: linear-gradient(135deg, #0284c7, #06b6d4);
  color: #fff;
  box-shadow: 0 4px 16px rgba(6, 182, 212, 0.35);
}

.hub-card.ecthp .btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #0284c7);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-bright);
}

/* Hub Visual Preview Images */
.hub-preview-wrapper {
  margin: 1.25rem 0 1.5rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #090a0f;
  position: relative;
  transition: var(--transition);
}

.hub-preview-wrapper:hover {
  border-color: var(--border-bright);
}

.hub-preview-img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.35s ease;
}

.hub-preview-wrapper:hover .hub-preview-img {
  transform: scale(1.02);
}

/* 3-Way Launch Options */
.launch-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

@media (max-width: 520px) {
  .launch-grid {
    grid-template-columns: 1fr;
  }
}

.btn-launch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-launch.primary-esoc {
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}
.btn-launch.primary-esoc:hover {
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  transform: translateY(-1px);
}

.btn-launch.primary-ecthp {
  background: linear-gradient(135deg, #0284c7, #06b6d4);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.35);
}
.btn-launch.primary-ecthp:hover {
  background: linear-gradient(135deg, #0369a1, #0284c7);
  transform: translateY(-1px);
}

.btn-launch.secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
  color: var(--text);
}
.btn-launch.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-bright);
}

/* Syllabus Quick Drawer */
.syllabus-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.75rem;
  background: transparent;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.78rem;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 1rem;
}

.syllabus-toggle:hover {
  color: var(--text);
  border-color: var(--cyan);
  background: rgba(34, 211, 238, 0.05);
}

.syllabus-list {
  display: none;
  background: rgba(15, 16, 25, 0.9);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.8rem;
}

.syllabus-list.is-open {
  display: block;
}

.syllabus-list ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.syllabus-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #cbd5e1;
  padding: 0.25rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

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

.syllabus-list .course-code {
  font-family: monospace;
  color: var(--cyan);
  font-weight: 600;
  margin-right: 0.5rem;
}

.syllabus-list .course-dur {
  font-size: 0.72rem;
  color: var(--muted);
}

/* Comparison / Philosophy Matrix */
.matrix-section {
  background: var(--panel);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 4rem;
  box-shadow: var(--shadow-md);
}

.matrix-title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  text-align: center;
}

.matrix-subtitle {
  font-size: 0.9rem;
  color: var(--muted);
  text-align: center;
  max-width: 680px;
  margin: 0 auto 2rem;
}

.matrix-table-wrap {
  overflow-x: auto;
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}

.matrix-table th {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-bright);
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.75rem;
}

.matrix-table td {
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  color: #d1d5db;
}

.matrix-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.col-feature {
  font-weight: 600;
  color: var(--text);
}

.col-esoc {
  color: var(--purple-2);
}

.col-ecthp {
  color: var(--cyan);
}

/* Embedded Viewer Container */
.iframe-portal-wrapper {
  background: var(--panel-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.iframe-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  gap: 1rem;
}

.iframe-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
}

.iframe-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.iframe-container {
  position: relative;
  width: 100%;
  height: 86vh;
  min-height: 650px;
  background: #090a0f;
}

.iframe-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* Fullscreen mode for iframe */
.iframe-portal-wrapper.fullscreen-mode {
  position: fixed;
  inset: 0;
  z-index: 9999;
  border-radius: 0;
  height: 100vh;
}
.iframe-portal-wrapper.fullscreen-mode .iframe-container {
  height: calc(100vh - 54px);
}

/* Footer */
.portal-footer {
  margin-top: auto;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.disclaimer-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  line-height: 1.6;
  font-size: 0.78rem;
  color: var(--faint);
}

.disclaimer-box strong {
  color: var(--muted);
}