:root {
  --bg-primary: #080d1a;
  --bg-secondary: #0f172a;
  --bg-card: rgba(18, 26, 47, 0.72);
  --bg-card-hover: rgba(26, 38, 68, 0.85);
  --bg-glass: rgba(15, 23, 42, 0.65);
  --bg-elevated: rgba(30, 41, 69, 0.9);
  
  --border-glass: rgba(148, 163, 184, 0.12);
  --border-focus: rgba(6, 182, 212, 0.45);
  --border-highlight: rgba(139, 92, 246, 0.35);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-cyan: #06b6d4;
  --accent-cyan-glow: rgba(6, 182, 212, 0.25);
  --accent-violet: #8b5cf6;
  --accent-violet-glow: rgba(139, 92, 246, 0.25);
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.25);
  --accent-orange: #ff6b35;
  --accent-orange-glow: rgba(255, 107, 53, 0.25);

  --font-ui: 'Bricolage Grotesque', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 35px var(--accent-cyan-glow);
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-ui);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(6, 182, 212, 0.12) 0%, transparent 60%),
    radial-gradient(circle at 90% 40%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 10% 80%, rgba(16, 185, 129, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, #080d1a 0%, #0a1122 100%);
  background-attachment: fixed;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.25);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-cyan);
}

/* ============================================================
   HEADER & NAVIGATION
   ============================================================ */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8, 13, 26, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 2rem;
  transition: all var(--transition-normal);
}

header.scrolled {
  background: rgba(8, 13, 26, 0.94);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  border-bottom-color: rgba(6, 182, 212, 0.2);
  padding: 0.7rem 2rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  display: inline-block;
  animation: pulse-dot 2.5s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.35rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  transition: width var(--transition-normal);
  border-radius: 2px;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(139, 92, 246, 0.15));
  border: 1px solid var(--border-focus);
  color: var(--accent-cyan) !important;
  padding: 0.4rem 0.9rem !important;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.78rem !important;
  transition: all var(--transition-fast) !important;
}

.nav-cta:hover {
  background: var(--accent-cyan) !important;
  color: #080d1a !important;
  box-shadow: 0 0 20px var(--accent-cyan-glow);
}

.btn-install-pwa {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(6, 182, 212, 0.2));
  border: 1px solid rgba(16, 185, 129, 0.5);
  color: var(--accent-emerald) !important;
  padding: 0.4rem 0.9rem !important;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.78rem !important;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast) !important;
}

.btn-install-pwa:hover {
  background: var(--accent-emerald) !important;
  color: #080d1a !important;
  box-shadow: 0 0 20px var(--accent-emerald-glow);
  transform: translateY(-1px);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  max-width: 1280px;
  margin: 2.5rem auto 1.5rem;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.hero-header-box {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent-cyan);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid rgba(6, 182, 212, 0.25);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.08);
}

h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
  background: linear-gradient(135deg, #ffffff 30%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  max-width: 980px;
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  line-height: 1.6;
  max-width: 820px;
}

.hero-banner-container {
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-md);
  background: var(--bg-secondary);
}

.hero-banner {
  width: 100%;
  height: 380px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-banner-container:hover .hero-banner {
  transform: scale(1.02);
}

.hero-overlay-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(8, 13, 26, 0.85) 0%, rgba(8, 13, 26, 0.2) 60%, transparent 100%),
              radial-gradient(circle at 10% 90%, rgba(6, 182, 212, 0.2) 0%, transparent 45%);
  pointer-events: none;
}

.hero-floating-badge {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

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

/* ============================================================
   METRIC CARDS (FEATURED HARDWARE)
   ============================================================ */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  width: 100%;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.metric-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 25px var(--accent-cyan-glow);
}

.metric-card:hover::before {
  opacity: 1;
}

.metric-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.metric-card-img-wrapper {
  width: 84px;
  height: 84px;
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.metric-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 4px;
  transition: transform var(--transition-normal);
}

.metric-card:hover img {
  transform: scale(1.08);
}

.metric-badge-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(139, 92, 246, 0.12);
  color: var(--accent-violet);
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.metric-card h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 0.35rem;
}

.metric-card .device-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.metric-card .device-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 1rem;
}

.metric-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  border-top: 1px solid rgba(148, 163, 184, 0.08);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.metric-power {
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.metric-action-link {
  color: var(--accent-cyan);
  font-weight: 600;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* ============================================================
   SECTIONS & LAYOUT CONTAINERS
   ============================================================ */
.section-container {
  max-width: 1280px;
  margin: 5rem auto;
  padding: 0 1.5rem;
}

.section-header-block {
  margin-bottom: 2rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
  display: block;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}

.section-lead {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: 0.4rem;
  max-width: 750px;
}

/* ============================================================
   SCENARIO CARDS
   ============================================================ */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 1.75rem;
}

.scenario-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
  position: relative;
}

.scenario-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-violet);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5), 0 0 30px var(--accent-violet-glow);
}

.scenario-card-img-box {
  width: 100%;
  height: 210px;
  position: relative;
  overflow: hidden;
  background: var(--bg-secondary);
}

.scenario-card-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.scenario-card:hover .scenario-card-img-box img {
  transform: scale(1.05);
}

.scenario-card-img-box::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(18, 26, 47, 0.95) 100%);
}

.scenario-card-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 2;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.scenario-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  gap: 1rem;
}

.scenario-card h3 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
}

.scenario-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
  flex-grow: 1;
}

.scenario-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.scenario-power {
  color: var(--accent-emerald);
}

.scenario-explore-btn {
  color: var(--accent-cyan);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* ============================================================
   COMPARATIVE MATRIX & FILTER CONTROLS
   ============================================================ */
.matrix-container {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}

.filters-bar {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr 1fr 1.5fr auto;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.75rem;
  background: rgba(15, 23, 42, 0.7);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
}

@media (max-width: 1024px) {
  .filters-bar {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 640px) {
  .filters-bar {
    grid-template-columns: 1fr;
  }
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.filter-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.filters-bar select,
.filters-bar input[type="text"] {
  background: #0b1120;
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.filters-bar select:focus,
.filters-bar input[type="text"]:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.2);
}

.range-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.range-wrap input[type="range"] {
  flex-grow: 1;
  accent-color: var(--accent-cyan);
}

.range-val {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-cyan);
  min-width: 60px;
}

.btn-reset-filters {
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  align-self: flex-end;
}

.btn-reset-filters:hover {
  background: rgba(255, 107, 53, 0.15);
  color: var(--accent-orange);
  border-color: rgba(255, 107, 53, 0.4);
}

.matrix-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  background: rgba(10, 16, 32, 0.6);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

th {
  background: rgba(15, 23, 42, 0.9);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--border-glass);
  position: sticky;
  top: 0;
  z-index: 10;
}

td {
  padding: 1rem 1.1rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.07);
  vertical-align: middle;
  color: var(--text-secondary);
}

tbody tr {
  transition: background var(--transition-fast);
}

tbody tr:hover {
  background: rgba(6, 182, 212, 0.04);
  cursor: pointer;
}

.device-cell {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.device-thumb-wrapper {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.device-thumb {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 2px;
}

.device-name-wrap {
  display: flex;
  flex-direction: column;
}

.device-name-text {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.device-category-pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-cyan);
}

.badge-tops {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.badge-tops.has-npu {
  background: rgba(139, 92, 246, 0.15);
  color: #a78bfa;
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.badge-tops.no-npu {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text-dim);
}

.badge-price {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--accent-emerald);
}

.btn-table-action {
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  color: var(--accent-cyan);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-table-action:hover {
  background: var(--accent-cyan);
  color: #080d1a;
}

/* ============================================================
   4-LAYER TOPOLOGY SCHEMATIC
   ============================================================ */
.topology-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
}

.topology-layer-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  display: grid;
  grid-template-columns: 140px 1fr 1fr auto;
  gap: 1.5rem;
  align-items: center;
  backdrop-filter: blur(12px);
  position: relative;
  transition: all var(--transition-normal);
}

@media (max-width: 900px) {
  .topology-layer-card {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1.25rem;
  }
}

.topology-layer-card:hover {
  border-color: var(--accent-cyan);
  background: var(--bg-card-hover);
  transform: translateX(4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 20px var(--accent-cyan-glow);
}

.topology-layer-badge {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent-cyan);
  display: flex;
  flex-direction: column;
}

.topology-layer-level {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.topology-device-info h4 {
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.topology-device-info p {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

.topology-protocols {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.protocol-tag {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-glass);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-violet);
}

/* ============================================================
   DEVICE DETAIL MODAL / DRAWER
   ============================================================ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(8, 13, 26, 0.85);
  backdrop-filter: blur(16px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  animation: fadeIn 0.2s ease-out;
}

.modal-backdrop.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-focus);
  border-radius: var(--radius-lg);
  max-width: 860px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7), var(--shadow-glow);
  position: relative;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 1.75rem 2rem 1.25rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-glass);
}

.modal-title-group h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
}

.modal-close-btn {
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(255, 107, 53, 0.2);
  color: var(--accent-orange);
}

.modal-body {
  padding: 2rem;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2rem;
}

@media (max-width: 768px) {
  .modal-body {
    grid-template-columns: 1fr;
    padding: 1.25rem;
  }
}

.modal-device-media {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.modal-device-media img {
  width: 100%;
  max-height: 240px;
  object-fit: contain;
  background: rgba(10, 16, 32, 0.8);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.modal-quick-meta {
  width: 100%;
  background: rgba(15, 23, 42, 0.7);
  border-radius: var(--radius-sm);
  padding: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.modal-tabs-nav {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-glass);
  margin-bottom: 1.25rem;
  overflow-x: auto;
}

.modal-tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.modal-tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

.modal-tab-pane {
  display: none;
}

.modal-tab-pane.active {
  display: block;
}

.spec-list, .usecase-list, .limitation-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.spec-list li, .usecase-list li, .limitation-list li {
  font-size: 0.92rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
}

.bullet-cyan { color: var(--accent-cyan); }
.bullet-violet { color: var(--accent-violet); }
.bullet-orange { color: var(--accent-orange); }

.modal-footer {
  padding: 1.25rem 2rem;
  border-top: 1px solid var(--border-glass);
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

/* ============================================================
   CALCULATOR BOX
   ============================================================ */
.calculator-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  align-items: center;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}

@media(max-width: 860px) {
  .calculator-box {
    grid-template-columns: 1fr;
    padding: 1.5rem;
  }
}

.calc-controls-pane {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.calc-toggle-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.calc-toggle-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(15, 23, 42, 0.7);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}

.calc-toggle-item label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
}

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

.calc-slider-card {
  background: rgba(15, 23, 42, 0.7);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.calc-slider-card .slider-header {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.calc-slider-card input[type="range"] {
  accent-color: var(--accent-cyan);
  height: 6px;
  cursor: pointer;
}

.calc-result-pane {
  background: linear-gradient(145deg, rgba(6, 182, 212, 0.08), rgba(139, 92, 246, 0.08));
  border: 1px solid var(--border-focus);
  border-radius: var(--radius-md);
  padding: 2.2rem 1.75rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.1);
}

.calc-result-main {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.calc-result-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.calc-result-value {
  font-size: clamp(2.5rem, 4vw, 3.6rem);
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  line-height: 1;
}

.calc-breakdown-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(148, 163, 184, 0.15);
}

.breakdown-card {
  background: rgba(10, 16, 32, 0.6);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}

.breakdown-card .title {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.breakdown-card .value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-emerald);
  margin-top: 0.2rem;
}

/* ============================================================
   SCENARIO PAGE SPECIFIC STYLES
   ============================================================ */
.scenario-top-header {
  margin-bottom: 2rem;
}

.scenario-hero-banner-wrap {
  width: 100%;
  height: 380px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-glass);
  margin: 1.5rem 0 2.5rem;
  position: relative;
  background: var(--bg-secondary);
}

.scenario-hero-banner-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scenario-req-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.scenario-req-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.scenario-req-card .req-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.scenario-req-card .req-val {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.bom-actions-row {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-bottom: 1rem;
}

.btn-utility {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(139, 92, 246, 0.15));
  border: 1px solid var(--border-focus);
  color: var(--text-primary);
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.btn-utility:hover {
  background: var(--accent-cyan);
  color: #080d1a;
  box-shadow: 0 0 20px var(--accent-cyan-glow);
}

.marketplace-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-market {
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--border-glass);
  transition: all var(--transition-fast);
}

.btn-market.amazon {
  background: rgba(255, 153, 0, 0.12);
  color: #ff9900;
  border-color: rgba(255, 153, 0, 0.3);
}
.btn-market.amazon:hover {
  background: #ff9900;
  color: #000;
}

.btn-market.ml {
  background: rgba(255, 230, 0, 0.12);
  color: #ffe600;
  border-color: rgba(255, 230, 0, 0.3);
}
.btn-market.ml:hover {
  background: #ffe600;
  color: #000;
}

.btn-market.shopee {
  background: rgba(238, 77, 45, 0.12);
  color: #ee4d2d;
  border-color: rgba(238, 77, 45, 0.3);
}
.btn-market.shopee:hover {
  background: #ee4d2d;
  color: #fff;
}

.steps-container {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-top: 1rem;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.4rem;
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.step-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

.step-card.completed {
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.05);
}

.step-card.completed .step-text {
  text-decoration: line-through;
  color: var(--text-dim);
}

.step-number {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-checkbox {
  accent-color: var(--accent-emerald);
  width: 20px;
  height: 20px;
  cursor: pointer;
  margin-top: 3px;
}

.step-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
  flex-grow: 1;
}

/* ============================================================
   FLOATING UTILITIES & TOAST
   ============================================================ */
.scroll-top-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-focus);
  color: var(--accent-cyan);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.scroll-top-btn.visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-top-btn:hover {
  background: var(--accent-cyan);
  color: #080d1a;
  transform: translateY(-3px);
  box-shadow: 0 0 25px var(--accent-cyan-glow);
}

.toast-notification {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--accent-emerald);
  color: var(--text-primary);
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 3000;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px var(--accent-emerald-glow);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-notification.active {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ============================================================
   FOOTER (BRANDED SIGNATURE)
   ============================================================ */
footer {
  border-top: 1px solid var(--border-glass);
  background: rgba(8, 13, 26, 0.95);
  padding: 4rem 1.5rem 3rem;
  margin-top: 6rem;
  position: relative;
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.footer-brand {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.footer-signature {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-signature a {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 700;
  transition: all var(--transition-fast);
}

.footer-signature a:hover {
  color: #fff;
  text-shadow: 0 0 12px var(--accent-cyan);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-secondary);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  margin-top: 1rem;
}