/* ==========================================================================
   AURA (Autonomous Universal Residential Agent) - Design System & Stylesheet
   Direction: Luxury Minimalist, Futuristic AI & Robotics, Dark Cyber Aesthetic
   Matches Reference Mockups: Image 1 (PYXON), Image 2 (Smart Home 3D),
   Image 3 (Multi-Agent Graph), Image 4 (Syntia AI), Image 5 (Timeline)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Vazirmatn:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-primary: #050811;
  --bg-secondary: #0A1122;
  --bg-card: rgba(13, 22, 42, 0.65);
  --bg-card-hover: rgba(20, 34, 64, 0.85);
  --bg-glass: rgba(15, 23, 42, 0.7);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 240, 255, 0.25);
  --border-glow-purple: rgba(139, 92, 246, 0.35);

  --accent-cyan: #00F0FF;
  --accent-cyan-glow: rgba(0, 240, 255, 0.4);
  --accent-purple: #8B5CF6;
  --accent-purple-glow: rgba(139, 92, 246, 0.4);
  --accent-amber: #F59E0B;
  --accent-green: #10B981;
  --accent-red: #EF4444;

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  --font-fa: 'Vazirmatn', system-ui, -apple-system, sans-serif;
  --font-en: 'Inter', system-ui, -apple-system, sans-serif;

  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

body.lang-en {
  font-family: var(--font-en);
  direction: ltr;
}

body.lang-fa {
  font-family: var(--font-fa);
  direction: rtl;
}

/* Background Ambient Glows */
.bg-glow-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-glow-1 {
  position: absolute;
  top: -150px;
  left: 20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, rgba(0,0,0,0) 70%);
  filter: blur(80px);
}

.ambient-glow-2 {
  position: absolute;
  top: 40%;
  right: -100px;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.07) 0%, rgba(0,0,0,0) 70%);
  filter: blur(100px);
}

.ambient-glow-3 {
  position: absolute;
  bottom: 10%;
  left: -150px;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.05) 0%, rgba(0,0,0,0) 70%);
  filter: blur(120px);
}

/* Container */
.container {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* Header & Nav */
header.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(5, 8, 17, 0.85);
  border-bottom: 1px solid var(--border-glass);
  transition: var(--transition-smooth);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-orb {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #00F0FF, #0A1122 80%);
  border: 1px solid rgba(0, 240, 255, 0.4);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
  position: relative;
  animation: pulse-orb 4s infinite ease-in-out;
}

@keyframes pulse-orb {
  0%, 100% { box-shadow: 0 0 15px rgba(0, 240, 255, 0.4); }
  50% { box-shadow: 0 0 25px rgba(0, 240, 255, 0.7); }
}

.brand-name {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  background: linear-gradient(135deg, #FFFFFF 0%, #94A3B8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 0.65rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition-smooth);
  position: relative;
  padding: 0.25rem 0;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  transition: var(--transition-smooth);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 0.4rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-smooth);
}

.lang-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  border-color: var(--border-glow);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
}

.btn-primary {
  background: linear-gradient(135deg, #00F0FF 0%, #0284C7 100%);
  color: #050811;
  font-weight: 700;
  padding: 0.6rem 1.4rem;
  border-radius: 9999px;
  text-decoration: none;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
  transition: var(--transition-smooth);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  border-radius: 9999px;
  text-decoration: none;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* Hero Section */
section.hero {
  padding-top: 8.5rem;
  padding-bottom: 5rem;
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 3.5rem;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.25);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.badge-tag .pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.4rem, 4.8vw, 4rem);
  font-weight: 800;
  line-height: 1.18;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #FFFFFF 20%, #00F0FF 60%, #8B5CF6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 1.2rem;
  font-weight: 600;
  color: #CBD5E1;
  margin-bottom: 1rem;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2.25rem;
  max-width: 580px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-metrics {
  display: flex;
  gap: 2rem;
  border-top: 1px solid var(--border-glass);
  padding-top: 1.75rem;
}

.metric-item .val {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-en);
}

.metric-item .val span {
  color: var(--accent-cyan);
}

.metric-item .lbl {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Hero Cybernetic Iris Visual (Image 1 - PYXON) */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cyber-eye-wrapper {
  position: relative;
  width: 440px;
  height: 440px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.eye-outer-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px dashed rgba(0, 240, 255, 0.25);
  animation: rotate-cw 40s linear infinite;
}

.eye-mid-ring {
  position: absolute;
  inset: 35px;
  border-radius: 50%;
  border: 1px solid rgba(139, 92, 246, 0.3);
  animation: rotate-ccw 30s linear infinite;
}

.eye-glow-sphere {
  position: absolute;
  inset: 70px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(0, 240, 255, 0.35) 0%, rgba(10, 17, 34, 0.85) 60%, #050811 100%);
  box-shadow: 0 0 60px rgba(0, 240, 255, 0.25), inset 0 0 40px rgba(139, 92, 246, 0.3);
  border: 1px solid rgba(0, 240, 255, 0.4);
}

.eye-retina-core {
  position: absolute;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, #00F0FF 0%, #0B1220 70%, #050811 100%);
  box-shadow: 0 0 45px rgba(0, 240, 255, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: eye-breathe 4s infinite ease-in-out;
}

.eye-pupil {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #050811;
  border: 2px solid rgba(0, 240, 255, 0.6);
  position: relative;
}

.eye-pupil::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 0 0 8px #FFFFFF;
}

.orbital-node {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan);
}

.orbital-node.n1 { top: 15px; left: 50%; }
.orbital-node.n2 { bottom: 40px; right: 20%; background: var(--accent-purple); box-shadow: 0 0 12px var(--accent-purple); }

.floating-agent-badge {
  position: absolute;
  bottom: 10px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glow);
  padding: 0.6rem 1.2rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

@keyframes rotate-cw { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes rotate-ccw { from { transform: rotate(0deg); } to { transform: rotate(-360deg); } }
@keyframes eye-breathe {
  0%, 100% { transform: scale(1); box-shadow: 0 0 45px rgba(0, 240, 255, 0.7); }
  50% { transform: scale(1.08); box-shadow: 0 0 70px rgba(0, 240, 255, 0.9); }
}

/* Section Headings */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-tag {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-cyan);
  letter-spacing: 0.15em;
  display: inline-block;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   ADVANCED 3D SMART HOME DEMO SECTION
   Faithfully matching Reference Mockup: Image 2 (Smart Home 3D Floorplan)
   ========================================================================== */
section.demo-section {
  padding: 5rem 0;
  background: radial-gradient(circle at 50% 25%, rgba(13, 24, 52, 0.85) 0%, var(--bg-primary) 85%);
  position: relative;
}

/* Top ambient HUD in Demo */
.smart-home-hud-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.user-greeting {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.greeting-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.btn-add-device {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.8rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-add-device:hover {
  background: rgba(0, 240, 255, 0.1);
  color: var(--accent-cyan);
  border-color: var(--border-glow);
}

.weather-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  background: rgba(15, 23, 42, 0.6);
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  border: 1px solid var(--border-glass);
}

/* The 3D Studio Stage (Matching Reference Image 2) */
.smart-home-stage {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) 350px;
  gap: 1.5rem;
  background: linear-gradient(135deg, rgba(20, 19, 42, 0.85) 0%, rgba(10, 12, 28, 0.95) 100%);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: 2rem;
  padding: 1.5rem;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.75), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
  min-height: 640px;
}

/* Left Navigation Vertical Pill Dock (Image 2) */
.left-nav-pill {
  width: 56px;
  background: linear-gradient(180deg, rgba(28, 26, 56, 0.9) 0%, rgba(16, 17, 36, 0.95) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 9999px;
  padding: 1.25rem 0.35rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.pill-icons-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.pill-icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.55);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: var(--transition-smooth);
}

.pill-icon-btn:hover {
  background: rgba(0, 240, 255, 0.12);
  color: var(--accent-cyan);
  transform: scale(1.08);
}

.pill-icon-btn.active {
  background: rgba(0, 240, 255, 0.2);
  color: var(--accent-cyan);
  box-shadow: 0 0 14px rgba(0, 240, 255, 0.4);
}

.user-avatar-dot {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00F0FF 0%, #8B5CF6 100%);
  color: #050811;
  font-weight: 800;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
  transition: var(--transition-smooth);
}

.user-avatar-dot:hover {
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.7);
}

/* Center 3D Isometric Viewport & Canvas Box */
.iso-center-viewport {
  position: relative;
  background: radial-gradient(ellipse at 50% 50%, rgba(20, 28, 54, 0.7) 0%, rgba(8, 11, 22, 0.95) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.5rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 560px;
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.5);
}

.viewport-header-tabs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background: rgba(10, 14, 28, 0.6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  z-index: 10;
}

.room-tab-pills {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.room-tab-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.95rem;
  border-radius: 9999px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-smooth);
}

.room-tab-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  color: var(--accent-cyan);
  border-color: rgba(0, 240, 255, 0.4);
}

.room-tab-btn.active {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(139, 92, 246, 0.25));
  color: #FFFFFF;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
}

.iso-canvas-box {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow: hidden;
  user-select: none;
}

#isoViewport {
  width: 100%;
  height: auto;
  max-height: 540px;
  transform-origin: center center;
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.7));
}

/* 3D Room Interactive Selection Highlight */
.room-interactive-zone {
  cursor: pointer;
  transition: var(--transition-smooth);
}

.room-interactive-zone:hover polygon.room-polygon {
  filter: brightness(1.3);
  stroke: rgba(0, 240, 255, 0.6) !important;
}

.room-polygon.room-selected {
  stroke: #00F0FF !important;
  stroke-width: 2.5 !important;
  filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.6));
}

/* 3D Device Pins on Floorplan (Image 2) */
.device-pin {
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.25s ease;
}

.device-pin:hover {
  filter: drop-shadow(0 0 14px rgba(0, 240, 255, 0.9));
}

.device-pin .pin-base {
  fill: #1A2238;
  stroke: rgba(255, 255, 255, 0.2);
  stroke-width: 1.5;
  transition: fill 0.3s ease, stroke 0.3s ease, filter 0.3s ease;
}

.device-pin.active .pin-base {
  fill: rgba(0, 240, 255, 0.25);
  stroke: #00F0FF;
  stroke-width: 2;
  filter: drop-shadow(0 0 8px #00F0FF);
}

.device-pin.locked .pin-base {
  fill: rgba(16, 185, 129, 0.25);
  stroke: #10B981;
  stroke-width: 2;
  filter: drop-shadow(0 0 8px #10B981);
}

.device-pin.unlocked .pin-base {
  fill: rgba(239, 68, 68, 0.25);
  stroke: #EF4444;
  stroke-width: 2;
  filter: drop-shadow(0 0 8px #EF4444);
}

/* Radar Minimap & Zoom Docks */
.viewport-radar-dock {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  width: 90px;
  height: 70px;
  background: rgba(14, 20, 38, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.85rem;
  padding: 0.35rem;
  backdrop-filter: blur(10px);
  z-index: 10;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  pointer-events: none;
}

body.lang-fa .viewport-radar-dock {
  left: auto;
  right: 1rem;
}

.viewport-zoom-dock {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  z-index: 10;
}

body.lang-fa .viewport-zoom-dock {
  right: auto;
  left: 1rem;
}

.zoom-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(18, 25, 48, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.zoom-btn:hover {
  background: rgba(0, 240, 255, 0.2);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  transform: scale(1.1);
}

/* Glassmorphism Floating Tablet Controller (Image 2) */
.tablet-controller-panel {
  width: 100%;
  background: linear-gradient(175deg, rgba(30, 28, 62, 0.85) 0%, rgba(15, 16, 36, 0.95) 100%);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: 1.6rem;
  padding: 1.35rem;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.tablet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.room-selector-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.45rem 0.9rem;
  border-radius: 0.75rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.room-selector-badge:hover {
  background: rgba(0, 240, 255, 0.1);
  border-color: rgba(0, 240, 255, 0.4);
  color: var(--accent-cyan);
}

.tablet-settings-btn {
  width: 36px;
  height: 36px;
  border-radius: 0.6rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.tablet-settings-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
  transform: rotate(45deg);
}

.tablet-energy-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.25);
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 1.15rem;
}

.tablet-energy-pill strong {
  color: var(--accent-cyan);
  font-weight: 700;
}

.tablet-mode-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  background: rgba(10, 12, 26, 0.65);
  padding: 0.25rem;
  border-radius: 9999px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 1.25rem;
}

.tablet-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.45rem 0;
  border-radius: 9999px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.tablet-tab-btn:hover {
  color: #FFFFFF;
}

.tablet-tab-btn.active {
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

/* Master Circular Power Dial (Image 2) */
.circular-dial-wrapper {
  position: relative;
  width: 165px;
  height: 165px;
  margin: 0 auto 1.25rem auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dial-gradient-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 180deg, #00F0FF, #8B5CF6, #F59E0B, #00F0FF);
  padding: 4px;
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 6px), #fff calc(100% - 5px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 6px), #fff calc(100% - 5px));
  filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.5));
  pointer-events: none;
}

.tablet-power-btn {
  position: relative;
  z-index: 5;
  width: 115px;
  height: 115px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(32, 42, 76, 0.95), rgba(12, 18, 36, 0.98));
  border: 2px solid rgba(255, 255, 255, 0.15);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  cursor: pointer;
  pointer-events: auto;
  transition: var(--transition-smooth);
  box-shadow: inset 0 2px 10px rgba(255, 255, 255, 0.1), 0 10px 25px rgba(0, 0, 0, 0.5);
}

.tablet-power-btn:hover {
  transform: scale(1.06);
  border-color: rgba(0, 240, 255, 0.6);
}

.tablet-power-btn.active {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 35px rgba(0, 240, 255, 0.55), inset 0 0 15px rgba(0, 240, 255, 0.3);
}

/* Color Swatches (Image 2) */
.color-swatches-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.color-swatch-dot {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition-smooth);
}

.color-swatch-dot:hover,
.color-swatch-dot.active {
  transform: scale(1.25);
  border-color: #FFFFFF;
}

.color-swatch-dot.c-cool { background: #BAE6FD; box-shadow: 0 0 10px #BAE6FD; }
.color-swatch-dot.c-white { background: #FEF08A; box-shadow: 0 0 10px #FEF08A; }
.color-swatch-dot.c-amber { background: #F59E0B; box-shadow: 0 0 10px #F59E0B; }
.color-swatch-dot.c-cyan { background: #00F0FF; box-shadow: 0 0 10px #00F0FF; }

/* Moon to Sun Dimmer Slider (Image 2) */
.dimmer-slider-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
}

.dimmer-track {
  flex-grow: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.12);
  outline: none;
}

.dimmer-track::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #FFFFFF;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.8);
}

/* Thermostat Climate Sub-panel in Tablet */
.tablet-temp-panel {
  display: none;
  flex-direction: column;
  align-items: center;
  margin-bottom: 1.25rem;
}

.tablet-temp-panel.active {
  display: flex;
}

.temp-dial-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin: 1rem 0;
}

.temp-adjust-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  font-size: 1.4rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.temp-adjust-btn:hover {
  background: rgba(0, 240, 255, 0.2);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: scale(1.1);
}

.temp-readout {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--accent-cyan);
  font-family: monospace;
  text-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
  min-width: 100px;
  text-align: center;
}

.hvac-modes-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  margin-top: 0.5rem;
}

.hvac-mode-pill {
  flex: 1;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.4rem 0.2rem;
  border-radius: 0.6rem;
  cursor: pointer;
  text-align: center;
  transition: var(--transition-smooth);
}

.hvac-mode-pill:hover,
.hvac-mode-pill.active {
  background: rgba(0, 240, 255, 0.15);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* Quick Room Hardware Overrides Bar in Tablet */
.tablet-quick-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.quick-action-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.5rem 0.4rem;
  border-radius: 0.6rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  transition: var(--transition-smooth);
}

.quick-action-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  border-color: rgba(0, 240, 255, 0.4);
  color: #FFFFFF;
}

.quick-action-btn.active {
  background: rgba(0, 240, 255, 0.18);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.25);
}

/* Bottom Console & Scenarios Section */
.demo-lower-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

/* Preset Buttons Bar */
.scenario-presets {
  background: rgba(13, 22, 42, 0.7);
  border: 1px solid var(--border-glass);
  border-radius: 1.25rem;
  padding: 1.25rem;
}

.scenario-presets-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}

.preset-buttons-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.preset-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.65rem 0.85rem;
  border-radius: 0.6rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-align: right;
  transition: var(--transition-smooth);
}

body.lang-en .preset-btn { text-align: left; }

.preset-btn:hover {
  background: rgba(0, 240, 255, 0.08);
  border-color: var(--border-glow);
  transform: translateY(-2px);
}

.preset-btn.preset-danger:hover {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.4);
}

/* Natural Language Input Bar (Image 4 - Syntia AI) */
.agent-input-container {
  background: rgba(13, 22, 42, 0.85);
  border: 1px solid var(--border-glow);
  border-radius: 9999px;
  padding: 0.4rem 0.5rem 0.4rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.15);
  transition: var(--transition-smooth);
  margin-bottom: 1rem;
}

body.lang-fa .agent-input-container {
  padding: 0.4rem 1.25rem 0.4rem 0.5rem;
}

.agent-input-container:focus-within {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 35px rgba(0, 240, 255, 0.35);
}

.agent-text-input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  width: 100%;
  outline: none;
}

.agent-text-input::placeholder {
  color: var(--text-muted);
}

.mic-toggle-btn {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.mic-toggle-btn:hover {
  background: rgba(0, 240, 255, 0.15);
  color: var(--accent-cyan);
}

.mic-toggle-btn.listening {
  background: #EF4444;
  color: #FFFFFF;
  box-shadow: 0 0 20px #EF4444;
  animation: pulse-dot 1s infinite;
}

.send-command-btn {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background: var(--accent-cyan);
  color: #050811;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  font-weight: 700;
  transition: var(--transition-smooth);
}

.send-command-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 0 15px var(--accent-cyan);
}

/* Cognitive Console */
.reasoning-console {
  background: #060A14;
  border: 1px solid var(--border-glass);
  border-radius: 1.25rem;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  min-height: 260px;
}

.console-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.console-status-indicator {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  color: var(--accent-cyan);
}

.log-stream {
  flex-grow: 1;
  overflow-y: auto;
  max-height: 200px;
  padding: 0.75rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.8rem;
}

.log-entry {
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-left: 3px solid var(--text-muted);
  line-height: 1.5;
  animation: fade-slide-in 0.3s ease;
}

body.lang-fa .log-entry {
  border-left: none;
  border-right: 3px solid var(--text-muted);
}

.log-entry.intent { border-color: var(--accent-cyan); background: rgba(0, 240, 255, 0.04); }
.log-entry.safety { border-color: var(--accent-amber); background: rgba(245, 158, 11, 0.05); }
.log-entry.safety-pass { border-color: var(--accent-green); background: rgba(16, 185, 129, 0.05); }
.log-entry.safety-fail { border-color: var(--accent-red); background: rgba(239, 68, 68, 0.08); }
.log-entry.execute { border-color: var(--accent-purple); background: rgba(139, 92, 246, 0.05); }

@keyframes fade-slide-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   PROBLEM SECTION
   ========================================================================== */
section.problem {
  padding: 6rem 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.problem-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: 1.25rem;
  padding: 2.25rem;
  transition: var(--transition-smooth);
  position: relative;
  display: flex;
  flex-direction: column;
}

.problem-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.15);
}

.problem-card.aura-highlight {
  border-color: var(--border-glow);
  box-shadow: 0 0 35px rgba(0, 240, 255, 0.12);
  background: linear-gradient(180deg, rgba(13, 27, 54, 0.8) 0%, rgba(10, 17, 34, 0.9) 100%);
}

.card-icon {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.problem-card.aura-highlight .card-icon {
  background: rgba(0, 240, 255, 0.1);
  border-color: var(--border-glow);
  color: var(--accent-cyan);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.card-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-features {
  list-style: none;
  border-top: 1px solid var(--border-glass);
  padding-top: 1.25rem;
}

.card-features li {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.problem-card.aura-highlight .card-features li {
  color: #E2E8F0;
}

/* Process Section */
section.process {
  padding: 6rem 0;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 1rem;
  padding: 1.5rem 1rem;
  text-align: center;
  transition: var(--transition-smooth);
}

.step-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.step-num {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: rgba(0, 240, 255, 0.1);
  color: var(--accent-cyan);
  font-weight: 800;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.75rem auto;
  border: 1px solid var(--border-glow);
}

.step-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   ARCHITECTURE SECTION (Image 3 - Multi-Agent Orchestration Graph)
   ========================================================================== */
section.architecture {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.arch-container {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 2rem;
  align-items: start;
}

.arch-diagram-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 1.5rem;
  padding: 1.75rem;
  position: relative;
}

.arch-layer {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-glass);
  border-radius: 1rem;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
}

.arch-layer:hover,
.arch-layer.selected {
  border-color: var(--accent-cyan);
  background: rgba(20, 35, 68, 0.9);
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.15);
  transform: scale(1.01);
}

.layer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.layer-index {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.layer-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.layer-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.layer-pill {
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 9999px;
  color: var(--text-secondary);
}

.arch-inspector-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 1.5rem;
  padding: 2rem;
  position: sticky;
  top: 6rem;
}

.inspector-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.inspector-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.inspector-body {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.inspector-block-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: #CBD5E1;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.inspector-list {
  list-style: none;
  margin-bottom: 1.25rem;
}

.inspector-list li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.inspector-list li::before {
  content: '▹';
  color: var(--accent-cyan);
}

/* Research Section */
section.research {
  padding: 6rem 0;
}

.research-table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 1.25rem;
  overflow-x: auto;
  margin-bottom: 3rem;
}

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

body.lang-fa table.comp-table { text-align: right; }

table.comp-table th,
table.comp-table td {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-glass);
  font-size: 0.9rem;
}

table.comp-table th {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
}

td.highlight-col {
  background: rgba(0, 240, 255, 0.03);
  font-weight: 700;
  color: var(--accent-cyan);
}

/* Timeline Roadmap (Image 5) */
section.roadmap {
  padding: 6rem 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, #070D1E 100%);
}

.timeline-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
  padding-top: 3rem;
}

.timeline-line {
  position: absolute;
  top: 4.2rem;
  left: 5%;
  right: 5%;
  height: 3px;
  background: linear-gradient(90deg, #00F0FF, #8B5CF6 70%, #EC4899 100%);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
  z-index: 0;
}

.timeline-node {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.timeline-dot {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: #050811;
  border: 3px solid var(--accent-cyan);
  box-shadow: 0 0 20px var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.timeline-node.active .timeline-dot {
  background: var(--accent-cyan);
  color: #050811;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 1rem;
  padding: 1.5rem 1rem;
  width: 100%;
  transition: var(--transition-smooth);
}

.timeline-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.timeline-stage {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--accent-cyan);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.timeline-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.timeline-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Downloads Section */
section.downloads {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.downloads-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 1.25rem;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

.download-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-5px);
  background: var(--bg-card-hover);
}

.dl-card-top {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.dl-file-icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.75rem;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.dl-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.dl-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.dl-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-glass);
  padding-top: 1rem;
}

.dl-format-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.08);
  padding: 0.2rem 0.6rem;
  border-radius: 0.4rem;
}

.btn-download {
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 700;
  color: #050811;
  background: var(--accent-cyan);
  padding: 0.45rem 1rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-smooth);
}

.btn-download:hover {
  box-shadow: 0 0 15px var(--accent-cyan);
  transform: scale(1.05);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 17, 0.85);
  backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: #0B1220;
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-radius: 1.25rem;
  padding: 2rem;
  max-width: 480px;
  width: 90%;
  box-shadow: 0 0 50px rgba(239, 68, 68, 0.25);
  transform: scale(0.95);
  transition: transform 0.3s ease;
  text-align: center;
}

.modal-overlay.active .modal-dialog { transform: scale(1); }

.modal-icon-danger {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid #EF4444;
  color: #EF4444;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem auto;
  font-size: 1.75rem;
}

.modal-title { font-size: 1.25rem; font-weight: 800; color: #F8FAFC; margin-bottom: 0.75rem; }
.modal-desc { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 1.75rem; }
.modal-actions { display: flex; gap: 1rem; justify-content: center; }

.btn-confirm-danger {
  background: #EF4444;
  color: #FFFFFF;
  border: none;
  padding: 0.65rem 1.5rem;
  border-radius: 9999px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-confirm-danger:hover { box-shadow: 0 0 20px rgba(239, 68, 68, 0.6); }

.btn-cancel {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 0.65rem 1.5rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
}

/* Footer */
footer.site-footer {
  border-top: 1px solid var(--border-glass);
  padding: 4rem 0 2rem 0;
  background: #03050B;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.7;
  margin-top: 0.75rem;
  max-width: 360px;
}

.footer-col h5 { font-size: 0.9rem; font-weight: 700; margin-bottom: 1.25rem; color: var(--text-primary); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.6rem; }
.footer-col a { color: var(--text-secondary); text-decoration: none; font-size: 0.85rem; transition: var(--transition-smooth); }
.footer-col a:hover { color: var(--accent-cyan); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1100px) {
  .smart-home-stage { grid-template-columns: 1fr; }
  .left-nav-pill { display: none; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-ctas, .hero-metrics { justify-content: center; }
  .demo-lower-grid { grid-template-columns: 1fr; }
  .arch-container { grid-template-columns: 1fr; }
  .arch-inspector-card { position: static; }
  .problem-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .timeline-track { grid-template-columns: 1fr; gap: 2rem; }
  .timeline-line { display: none; }
  .downloads-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .preset-buttons-grid { grid-template-columns: 1fr; }
}