/* ==========================================================================
   ISP Live Video & WiFi Support (Pomagač) — Landing Page Design System
   ========================================================================== */

:root {
  --bg-primary: #090D16;
  --bg-secondary: #0F172A;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(6, 182, 212, 0.35);
  
  --cyan-primary: #06B6D4;
  --cyan-glow: rgba(6, 182, 212, 0.4);
  --indigo-accent: #6366F1;
  --indigo-glow: rgba(99, 102, 241, 0.35);
  --emerald-success: #10B981;
  --amber-warning: #F59E0B;
  --rose-danger: #F43F5E;

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px var(--border-subtle);
  --shadow-glow: 0 0 40px -10px var(--cyan-glow);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background: 
    radial-gradient(circle at 15% 15%, rgba(6, 182, 212, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(99, 102, 241, 0.14) 0%, transparent 45%),
    radial-gradient(circle at 50% 80%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
    var(--bg-primary);
}

/* Container */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.82);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 20px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--cyan-primary), var(--indigo-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.15rem;
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
}

.brand-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.15);
  color: var(--cyan-primary);
  border: 1px solid rgba(6, 182, 212, 0.3);
  margin-left: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  transition: color 0.2s ease;
  white-space: nowrap;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-actions .btn {
  padding: 9px 16px;
  font-size: 0.88rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan-primary), #0284C7);
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 6px 25px rgba(6, 182, 212, 0.55);
  transform: translateY(-2px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 70px 0 60px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: #A5B4FC;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.3rem, 4.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #38BDF8, #818CF8, #C084FC);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 580px;
}

/* Quick PIN Connect Box */
.pin-connect-card {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  backdrop-filter: blur(12px);
  margin-bottom: 32px;
}

.pin-connect-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.pin-connect-title {
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pin-badge {
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.15);
  color: var(--emerald-success);
  font-weight: 700;
}

.pin-input-group {
  display: flex;
  gap: 12px;
}

.pin-input {
  flex: 1;
  background: rgba(0, 0, 0, 0.4);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.25em;
  color: var(--cyan-primary);
  text-align: center;
  transition: all 0.2s ease;
}

.pin-input:focus {
  outline: none;
  border-color: var(--cyan-primary);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
}

.pin-input::placeholder {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  letter-spacing: normal;
  color: var(--text-muted);
}

.btn-connect {
  padding: 14px 26px;
  font-size: 1rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan-primary), #0284C7);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-connect:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
}

.pin-help-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Trust Badges */
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.trust-item i, .trust-item svg {
  color: var(--cyan-primary);
}

/* ==========================================================================
   Hero Visual Interactive Simulation Card
   ========================================================================== */
.hero-visual-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 20px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}

.visual-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 16px;
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--rose-danger);
  letter-spacing: 0.05em;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--rose-danger);
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(244, 63, 94, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(244, 63, 94, 0); }
}

.stream-sim-box {
  background: #020617;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 24px 18px;
  position: relative;
  overflow: hidden;
}

/* Simulated Hardware Router */
.sim-router {
  background: linear-gradient(180deg, #1E293B, #0F172A);
  border: 2px solid #334155;
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.8);
  position: relative;
}

.router-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.router-brand {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: #64748B;
}

.router-leds {
  display: flex;
  gap: 12px;
}

.led-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.led-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #334155;
}

.led-dot.green { background: #10B981; box-shadow: 0 0 8px #10B981; }
.led-dot.red-blink { background: #F43F5E; box-shadow: 0 0 10px #F43F5E; animation: blink-led 1s infinite alternate; }
.led-dot.amber { background: #F59E0B; box-shadow: 0 0 8px #F59E0B; }

@keyframes blink-led {
  0% { opacity: 0.2; }
  100% { opacity: 1; }
}

.led-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  color: #94A3B8;
}

.router-ports {
  display: flex;
  gap: 10px;
  background: #090D16;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid #1E293B;
}

.port-box {
  flex: 1;
  border: 1px dashed #475569;
  border-radius: 4px;
  padding: 8px 4px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #94A3B8;
  position: relative;
}

.port-box.active-port {
  border-color: var(--cyan-primary);
  background: rgba(6, 182, 212, 0.1);
  color: var(--cyan-primary);
}

/* AR Annotations Layer (Overlaid) */
.ar-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.ar-target-ring {
  position: absolute;
  top: 38%;
  left: 60%;
  transform: translate(-50%, -50%);
  width: 68px;
  height: 68px;
  border: 2px solid var(--rose-danger);
  border-radius: 50%;
  animation: pulse-ring 1.8s infinite;
}

.ar-target-label {
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--rose-danger);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

@keyframes pulse-ring {
  0% { transform: translate(-50%, -50%) scale(0.8); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(1.4); opacity: 0; }
}

.ar-arrow-callout {
  position: absolute;
  top: 65%;
  left: 25%;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(6, 182, 212, 0.2);
  border: 1px solid var(--cyan-primary);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  color: var(--cyan-primary);
  font-size: 0.78rem;
  font-weight: 700;
  backdrop-filter: blur(8px);
}

.sim-bottom-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.stat-chip {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.stat-chip-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.stat-chip-val {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-mono);
}

/* ==========================================================================
   Metrics & Stats Row
   ========================================================================== */
.stats-section {
  padding: 40px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(15, 23, 42, 0.4);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-number .highlight {
  color: var(--cyan-primary);
}

.stat-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* ==========================================================================
   Interactive ROI Calculator Section
   ========================================================================== */
.calculator-section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px;
}

.section-tag {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cyan-primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.calc-control-group {
  margin-bottom: 28px;
}

.calc-label-row {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.calc-val-display {
  color: var(--cyan-primary);
  font-family: var(--font-mono);
  font-size: 1.1rem;
}

.calc-slider {
  width: 100%;
  height: 8px;
  border-radius: var(--radius-full);
  background: #1E293B;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--cyan-primary);
  box-shadow: 0 0 12px var(--cyan-primary);
  cursor: pointer;
  transition: transform 0.1s;
}

.calc-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.calc-results-box {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(99, 102, 241, 0.15));
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
}

.savings-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.savings-amount {
  font-size: 3.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.savings-amount span {
  color: var(--emerald-success);
}

.savings-details {
  display: flex;
  justify-content: space-around;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Feature Grid Section
   ========================================================================== */
.features-section {
  padding: 80px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.6);
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan-primary);
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   How It Works (3 Steps)
   ========================================================================== */
.steps-section {
  padding: 80px 0;
  background: rgba(15, 23, 42, 0.3);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  position: relative;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 800;
  color: var(--cyan-primary);
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.3);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Comparison Table Section
   ========================================================================== */
.comparison-section {
  padding: 80px 0;
}

.comparison-table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.comp-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comp-table th, .comp-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.comp-table th {
  background: rgba(0, 0, 0, 0.4);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.comp-table th.highlight-col {
  color: var(--cyan-primary);
  background: rgba(6, 182, 212, 0.08);
}

.comp-table td.highlight-col {
  background: rgba(6, 182, 212, 0.05);
  font-weight: 700;
  color: #fff;
}

.comp-table tr:last-child td {
  border-bottom: none;
}

/* ==========================================================================
   Security & CTA Section
   ========================================================================== */
.cta-section {
  padding: 90px 0;
}

.cta-box {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.9));
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-glow);
}

.cta-title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 40px 0;
  background: var(--bg-primary);
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1120px) {
  .nav-links {
    gap: 14px;
  }
  .nav-links a {
    font-size: 0.85rem;
  }
}

@media (max-width: 992px) {
  .nav-links {
    display: none;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .features-grid, .steps-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .calc-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .features-grid, .steps-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .pin-input-group {
    flex-direction: column;
  }
  .btn-connect {
    width: 100%;
    justify-content: center;
  }
  .nav-actions .btn {
    padding: 7px 12px;
    font-size: 0.8rem;
  }
}

/* ==========================================================================
   Interactive Product Showcase Tabs & Realistic UI Mockups
   ========================================================================== */
.showcase-section {
  padding: 90px 0 70px;
  background: radial-gradient(circle at 50% 10%, rgba(6, 182, 212, 0.08) 0%, transparent 60%);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.showcase-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.showcase-tab-btn {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 12px 22px;
  border-radius: var(--radius-full);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.showcase-tab-btn:hover {
  background: rgba(30, 41, 59, 0.9);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.15);
}

.showcase-tab-btn.active {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(99, 102, 241, 0.25));
  border-color: var(--cyan-primary);
  color: #FFFFFF;
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

.showcase-tab-btn i {
  color: var(--cyan-primary);
  font-size: 1.05rem;
}

.showcase-tab-btn.active i {
  color: #38BDF8;
}

.showcase-content-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-card), 0 0 50px -10px rgba(6, 182, 212, 0.15);
  backdrop-filter: blur(16px);
  min-height: 520px;
  position: relative;
}

.showcase-panel {
  display: none;
  animation: fadeInPanel 0.35s ease forwards;
}

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

@keyframes fadeInPanel {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 24px;
}

@media (max-width: 960px) {
  .showcase-grid {
    grid-template-columns: 1fr;
  }
}

/* Studio UI Elements */
.studio-main-frame {
  background: #030712;
  border: 1px solid #1E293B;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.studio-top-bar {
  background: #0B0F19;
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #1E293B;
  font-size: 0.8rem;
}

.studio-canvas-area {
  position: relative;
  height: 380px;
  background: #020617;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.studio-controls-bar {
  background: #0B0F19;
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #1E293B;
  flex-wrap: wrap;
  gap: 10px;
}

.ar-tool-btn-group {
  display: flex;
  gap: 6px;
}

.ar-tool-btn {
  background: #1E293B;
  border: 1px solid #334155;
  color: #CBD5E1;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.ar-tool-btn.active, .ar-tool-btn:hover {
  background: var(--cyan-primary);
  color: #000;
  border-color: var(--cyan-primary);
}

.studio-sidebar {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sidebar-card {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid #1E293B;
  border-radius: var(--radius-md);
  padding: 14px;
}

.sidebar-title {
  font-size: 0.82rem;
  font-weight: 800;
  color: #38BDF8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Smartphone Mockup Frame */
.phone-mockup-container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 0;
}

.phone-device {
  width: 310px;
  height: 520px;
  background: #000000;
  border-radius: 40px;
  border: 10px solid #1E293B;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 30px rgba(6, 182, 212, 0.25);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.phone-notch {
  width: 110px;
  height: 20px;
  background: #1E293B;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
  z-index: 30;
}

.phone-screen {
  flex: 1;
  background: #020617;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.phone-header-overlay {
  position: absolute;
  top: 24px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 20;
  font-size: 0.72rem;
}

.phone-badge {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.phone-bottom-controls {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-around;
  z-index: 20;
}

.phone-action-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  backdrop-filter: blur(8px);
}

.phone-action-btn.end-call {
  background: var(--rose-danger);
  border-color: var(--rose-danger);
}

/* Technician Floorplan Grid Mockup */
.tech-tool-container {
  background: #070A11;
  border: 1px solid #1F2937;
  border-radius: var(--radius-lg);
  padding: 16px;
}

.tech-rooms-scroll {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.tech-room-pill {
  background: #1E293B;
  border: 1px solid #334155;
  color: #CBD5E1;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
}

.tech-room-pill.active {
  background: #0284C7;
  border-color: #38BDF8;
  color: #fff;
}

.tech-canvas-grid {
  background: #020617;
  border: 1px solid #1E293B;
  border-radius: var(--radius-md);
  height: 320px;
  position: relative;
  overflow: hidden;
}

.heatmap-zone {
  position: absolute;
  border-radius: 50%;
  filter: blur(28px);
  opacity: 0.5;
}

.zone-green {
  width: 220px;
  height: 220px;
  background: #10B981;
  top: 15%;
  left: 15%;
}

.zone-yellow {
  width: 180px;
  height: 180px;
  background: #F59E0B;
  top: 30%;
  left: 55%;
}

.zone-red {
  width: 140px;
  height: 140px;
  background: #F43F5E;
  top: 50%;
  left: 75%;
}

.tech-grid-lines {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.tech-pin-marker {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  transform: translate(-50%, -50%);
  z-index: 10;
}

.tech-pin-badge {
  padding: 2px 6px;
  border-radius: 4px;
  color: #fff;
}

/* ==========================================================================
   Expanded Use Cases & Real-World Scenarios
   ========================================================================== */
.usecases-section {
  padding: 85px 0 70px;
}

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.usecase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.usecase-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
  background: var(--bg-card-hover);
}

.usecase-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.usecase-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(99, 102, 241, 0.2));
  border: 1px solid rgba(6, 182, 212, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan-primary);
  font-size: 1.4rem;
  flex-shrink: 0;
}

.usecase-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
}

.usecase-tag {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cyan-primary);
  display: inline-block;
  margin-bottom: 4px;
}

.usecase-scenarios-list {
  list-style: none;
  margin: 16px 0 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.usecase-scenarios-list li {
  font-size: 0.92rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.usecase-scenarios-list li i {
  color: var(--emerald-success);
  margin-top: 4px;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.usecase-footer-benefit {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 0.82rem;
  color: #A5B4FC;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ==========================================================================
   100% On-Premise & Security Architecture Section
   ========================================================================== */
.security-architecture-section {
  padding: 85px 0 70px;
  background: rgba(15, 23, 42, 0.4);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.arch-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
}

.arch-card-main {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.arch-pillar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.arch-pillar-item {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: all 0.2s ease;
}

.arch-pillar-item:hover {
  border-color: rgba(6, 182, 212, 0.3);
  transform: translateY(-2px);
}

.arch-pillar-icon {
  font-size: 1.2rem;
  color: var(--cyan-primary);
  margin-bottom: 8px;
}

.arch-pillar-title {
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: #fff;
}

.arch-pillar-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

@media (max-width: 992px) {
  .usecases-grid, .arch-layout {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Interactive FAQ Section
   ========================================================================== */
.faq-section {
  padding: 85px 0 70px;
}

.faq-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.25s ease;
}

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

.faq-item.active {
  border-color: rgba(6, 182, 212, 0.4);
  background: var(--bg-card-hover);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.faq-question {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  user-select: none;
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan-primary);
  font-size: 0.85rem;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--cyan-primary);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 24px 22px;
}