.liquid-glass {
  background: rgba(255, 255, 255, 0.01);
  background-blend-mode: luminosity;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: none;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}
.liquid-glass::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1.4px;
  background: linear-gradient(180deg,
    rgba(255, 255, 255, 0.45) 0%,
    rgba(255, 255, 255, 0.15) 20%,
    rgba(255, 255, 255, 0) 40%,
    rgba(255, 255, 255, 0) 60%,
    rgba(255, 255, 255, 0.15) 80%,
    rgba(255, 255, 255, 0.45) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.liquid-glass-strong {
  background: rgba(255, 255, 255, 0.01);
  background-blend-mode: luminosity;
  backdrop-filter: blur(50px);
  -webkit-backdrop-filter: blur(50px);
  border: none;
  box-shadow: 4px 4px 4px rgba(0, 0, 0, 0.05), inset 0 1px 1px rgba(255, 255, 255, 0.15);
  position: relative;
  overflow: hidden;
}
.liquid-glass-strong::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1.4px;
  background: linear-gradient(180deg,
    rgba(255, 255, 255, 0.5) 0%,
    rgba(255, 255, 255, 0.2) 20%,
    rgba(255, 255, 255, 0) 40%,
    rgba(255, 255, 255, 0) 60%,
    rgba(255, 255, 255, 0.2) 80%,
    rgba(255, 255, 255, 0.5) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

/* ============================================================
   MultiSense-DF — Complete Design System
   Dark Glassmorphism Theme | Purple/Cyan Accents
   ============================================================ */

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

:root {
  /* Core Palette (Premium Light Theme transformation) */
  --bg-primary:    #f5f7fc;
  --bg-secondary:  #ebedf5;
  --bg-surface:    #ffffff;
  --bg-elevated:   #ffffff;
  --bg-card:       rgba(255, 255, 255, 0.85);

  /* Accent Colors */
  --accent-purple:       #4f46e5;
  --accent-purple-light: #6366f1;
  --accent-purple-dim:   rgba(79, 70, 229, 0.08);
  --accent-cyan:         #0891b2;
  --accent-cyan-light:   #06b6d4;
  --accent-cyan-dim:     rgba(8, 145, 178, 0.08);

  /* Status Colors */
  --color-fake:      #e11d48;
  --color-fake-dim:  rgba(225, 29, 72, 0.08);
  --color-fake-glow: rgba(225, 29, 72, 0.25);
  --color-real:      #10b981;
  --color-real-dim:  rgba(16, 185, 129, 0.08);
  --color-real-glow: rgba(16, 185, 129, 0.25);

  /* Text */
  --text-primary:   #0f172a;
  --text-secondary: #334155;
  --text-muted:     #64748b;
  --text-accent:    #4f46e5;

  /* Borders */
  --border-subtle:  rgba(0, 0, 0, 0.06);
  --border-glass:   rgba(0, 0, 0, 0.08);
  --border-purple:  rgba(79, 70, 229, 0.25);
  --border-cyan:    rgba(8, 145, 178, 0.25);

  /* Fonts */
  --font-heading: 'Plus Jakarta Sans', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Shadows (Light Mode Neumorphic/Glow) */
  --shadow-glow-purple: 0 0 30px rgba(79, 70, 229, 0.15), 0 0 60px rgba(79, 70, 229, 0.05);
  --shadow-glow-cyan:   0 0 30px rgba(8, 145, 178, 0.15), 0 0 60px rgba(8, 145, 178, 0.05);
  --shadow-glow-fake:   0 0 40px rgba(225, 29, 72, 0.2), 0 0 80px rgba(225, 29, 72, 0.08);
  --shadow-glow-real:   0 0 40px rgba(16, 185, 129, 0.2), 0 0 80px rgba(16, 185, 129, 0.08);
  --shadow-card:        0 10px 30px rgba(0, 0, 0, 0.03), 0 1px 3px rgba(0, 0, 0, 0.01), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  --shadow-elevated:    0 20px 40px rgba(0, 0, 0, 0.05), 0 1px 10px rgba(0, 0, 0, 0.02), inset 0 1px 0 rgba(255, 255, 255, 0.9);

  /* Transitions */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:   250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: var(--accent-purple);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-purple-light); }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-style: normal; /* Sans-serif geometric headings look best normal */
  line-height: 1.2;
  font-weight: 700; /* Bold headers make the typography premium */
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }

p { color: var(--text-secondary); line-height: 1.7; }
a { color: var(--accent-cyan); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-cyan-light); }

/* ---------- Background Mesh ---------- */
.app-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%,  rgba(124, 58, 237, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(6, 182, 212, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 60% 40%,  rgba(124, 58, 237, 0.03) 0%, transparent 50%),
    var(--bg-primary);
}

/* Animated mesh dots */
.app-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(0,0,0,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 100% 100% at 50% 50%, black 40%, transparent 100%);
}

/* ---------- Glass Card ---------- */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.glass-card:hover {
  border-color: var(--border-purple);
  box-shadow: var(--shadow-card), 0 0 20px rgba(124, 58, 237, 0.08);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: none;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-bounce);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0);
  transition: background var(--transition-fast);
}

.btn:hover::after { background: rgba(255, 255, 255, 0.08); }
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(to bottom, var(--accent-purple-light), var(--accent-purple));
  color: #fff;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.15), inset 0 1px 0 rgba(255,255,255,0.3);
  border-bottom: 3px solid #3730a3 !important;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-bottom-width 0.15s ease;
}

.btn-primary:hover {
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.25), inset 0 1px 0 rgba(255,255,255,0.4);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(2px) !important;
  border-bottom-width: 0px !important;
  box-shadow: 0 2px 5px rgba(79, 70, 229, 0.15), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-primary);
  border: 1px solid #d1d5db;
  box-shadow: 0 2px 4px rgba(0,0,0,0.03), inset 0 1px 0 rgba(255,255,255,0.8);
  border-bottom: 3px solid #b5b9c2 !important;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-bottom-width 0.15s ease;
}

.btn-secondary:hover {
  background: #fdfdfd;
  border-color: #9ca3af;
  transform: translateY(-1px);
}

.btn-secondary:active {
  transform: translateY(2px) !important;
  border-bottom-width: 0px !important;
  box-shadow: 0 1px 2px rgba(0,0,0,0.03), inset 0 1px 0 rgba(255,255,255,0.5);
}

.btn-demo {
  background: linear-gradient(to bottom, #06b6d4, #0891b2);
  color: #fff;
  border-bottom: 3px solid #155e75 !important;
  box-shadow: 0 4px 10px rgba(8, 145, 178, 0.15), inset 0 1px 0 rgba(255,255,255,0.3);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-bottom-width 0.15s ease;
}

.btn-demo:hover {
  background: #0891b2;
  box-shadow: 0 6px 16px rgba(8, 145, 178, 0.25), inset 0 1px 0 rgba(255,255,255,0.4);
  transform: translateY(-1px);
}

.btn-demo:active {
  transform: translateY(2px) !important;
  border-bottom-width: 0px !important;
  box-shadow: 0 2px 5px rgba(8, 145, 178, 0.15), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-glass);
}

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge-purple {
  background: var(--accent-purple-dim);
  color: var(--accent-purple-light);
  border: 1px solid var(--border-purple);
}

/* ---------- Layout ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-4); }
}

/* ---------- Page Transitions ---------- */
@keyframes pageIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-enter {
  animation: pageIn 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* ---------- Gradient Text ---------- */
.gradient-text {
  background: linear-gradient(135deg, var(--accent-purple-light), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Divider ---------- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glass), transparent);
  margin: var(--space-8) 0;
}

/* ---------- Loading Skeleton ---------- */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255,255,255,0.04) 25%,
    rgba(255,255,255,0.08) 50%,
    rgba(255,255,255,0.04) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* ---------- Spinner ---------- */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.1);
  border-top-color: var(--accent-purple);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ---------- Pulse ---------- */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.pulse { animation: pulse 2s ease-in-out infinite; }

/* ---------- Float ---------- */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ---------- Glow Pulse ---------- */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(124, 58, 237, 0.3); }
  50% { box-shadow: 0 0 40px rgba(124, 58, 237, 0.6), 0 0 80px rgba(124, 58, 237, 0.2); }
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 10, 15, 0.85);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.logo-text span {
  color: var(--accent-purple-light);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-real);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}

.status-dot.offline { background: var(--color-fake); animation: none; }

/* ---------- Hero Section ---------- */
.hero-section {
  padding: var(--space-16) 0 var(--space-12);
  text-align: center;
  position: relative;
}

.hero-eyebrow {
  margin-bottom: var(--space-4);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-5);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  line-height: 1.7;
}

/* ---------- Feature Cards ---------- */
.features-section {
  padding: var(--space-12) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

@media (max-width: 900px) {
  .features-grid { grid-template-columns: 1fr; }
}

@media (min-width: 640px) and (max-width: 900px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

.feature-card {
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-bounce), box-shadow var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-elevated), 0 0 30px rgba(124, 58, 237, 0.1);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.feature-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  font-size: 1.5rem;
  position: relative;
}

.feature-icon-wrap.purple {
  background: var(--accent-purple-dim);
  border: 1px solid var(--border-purple);
  --gradient: linear-gradient(90deg, var(--accent-purple), var(--accent-purple-light));
}

.feature-icon-wrap.cyan {
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-cyan);
  --gradient: linear-gradient(90deg, var(--accent-cyan), var(--accent-cyan-light));
}

.feature-icon-wrap.pink {
  background: rgba(244, 63, 94, 0.1);
  border: 1px solid rgba(244, 63, 94, 0.3);
  --gradient: linear-gradient(90deg, #f43f5e, #fb7185);
}

.feature-card.purple-card {
  --gradient: linear-gradient(90deg, var(--accent-purple), var(--accent-purple-light));
}
.feature-card.cyan-card {
  --gradient: linear-gradient(90deg, var(--accent-cyan), var(--accent-cyan-light));
}
.feature-card.pink-card {
  --gradient: linear-gradient(90deg, #f43f5e, #fb7185);
}

.feature-card h3 {
  font-size: 1.15rem;
  margin-bottom: var(--space-2);
}

.feature-card p {
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ---------- Upload Zone ---------- */
.upload-zone-wrapper {
  max-width: 680px;
  margin: 0 auto var(--space-6);
}

.upload-zone {
  position: relative;
  padding: var(--space-12) var(--space-8);
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  overflow: hidden;
  border: 2px solid transparent;
  background-clip: padding-box;
}

/* Animated gradient border */
.upload-zone::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-xl) + 2px);
  background: linear-gradient(
    var(--border-angle, 0deg),
    var(--accent-purple),
    var(--accent-cyan),
    var(--accent-purple)
  );
  z-index: -1;
  animation: borderRotate 4s linear infinite;
  opacity: 0.5;
  transition: opacity var(--transition-base);
}

.upload-zone::after {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: var(--radius-xl);
  background: var(--bg-surface);
  z-index: -1;
}

@keyframes borderRotate {
  from { --border-angle: 0deg; }
  to { --border-angle: 360deg; }
}

@property --border-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

.upload-zone.drag-over {
  transform: scale(1.01);
}

.upload-zone.drag-over::before {
  opacity: 1;
  animation-duration: 1.5s;
}

.upload-zone.has-file::before {
  background: linear-gradient(var(--border-angle, 0deg), var(--color-real), #4ade80, var(--color-real));
}

.upload-icon-container {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple-dim), var(--accent-cyan-dim));
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
  font-size: 2rem;
  transition: all var(--transition-bounce);
  animation: float 3s ease-in-out infinite;
}

.upload-zone.drag-over .upload-icon-container {
  transform: scale(1.15);
  background: linear-gradient(135deg, var(--accent-purple-dim), var(--accent-cyan-dim));
  box-shadow: var(--shadow-glow-purple);
  animation: none;
}

.upload-zone h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
}

.upload-zone p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

.file-types {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.file-type-chip {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  font-family: monospace;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.selected-file {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-md);
  margin-top: var(--space-4);
  text-align: left;
}

.selected-file-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.selected-file-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.selected-file-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.selected-file-size {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.remove-file-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1rem;
  padding: var(--space-1);
  border-radius: 50%;
  display: flex;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.remove-file-btn:hover { color: var(--color-fake); background: rgba(239,68,68,0.1); }

.upload-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Analysis Progress ---------- */
.progress-wrapper {
  max-width: 560px;
  margin: 0 auto;
  padding: var(--space-8);
}

.progress-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.progress-header h3 {
  font-size: 1.4rem;
  margin-bottom: var(--space-2);
}

.progress-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.progress-step {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-base);
}

.progress-step.active {
  background: rgba(124, 58, 237, 0.08);
  border-color: var(--border-purple);
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.1);
}

.progress-step.completed {
  background: rgba(34, 197, 94, 0.06);
  border-color: rgba(34, 197, 94, 0.2);
}

.step-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: all var(--transition-base);
}

.step-icon.waiting {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.step-icon.active {
  background: var(--accent-purple-dim);
  border: 1px solid var(--border-purple);
  color: var(--accent-purple-light);
  animation: glowPulse 1.5s ease-in-out infinite;
}

.step-icon.completed {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--color-real);
}

.step-text { flex: 1; }

.step-label {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.step-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.step-status {
  font-size: 0.8rem;
  font-weight: 600;
  flex-shrink: 0;
}

.step-status.active { color: var(--accent-purple-light); }
.step-status.completed { color: var(--color-real); }
.step-status.waiting { color: var(--text-muted); }

/* Overall progress bar */
.overall-progress {
  margin-top: var(--space-6);
}

.progress-bar-track {
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 10px rgba(124, 58, 237, 0.5);
}

.progress-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: var(--space-2);
}

/* ---------- Results Dashboard ---------- */
.results-page {
  padding: var(--space-8) 0 var(--space-16);
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.results-filename {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.results-grid .span-2 {
  grid-column: span 2;
}

@media (max-width: 768px) {
  .results-grid {
    grid-template-columns: 1fr;
  }
  .results-grid .span-2 {
    grid-column: span 1;
  }
}

/* ---------- Verdict Banner ---------- */
.verdict-banner {
  grid-column: span 2;
  padding: var(--space-8) var(--space-10);
  border-radius: var(--radius-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

@media (max-width: 768px) {
  .verdict-banner {
    grid-column: span 1;
    padding: var(--space-6);
  }
}

.verdict-banner.fake {
  background: linear-gradient(135deg, rgba(239,68,68,0.08), rgba(239,68,68,0.03));
  border: 1px solid rgba(239,68,68,0.25);
}

.verdict-banner.real {
  background: linear-gradient(135deg, rgba(34,197,94,0.08), rgba(34,197,94,0.03));
  border: 1px solid rgba(34,197,94,0.25);
}

.verdict-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 300px;
  border-radius: 50%;
  opacity: 0.06;
  pointer-events: none;
}

.verdict-banner.fake::before { background: var(--color-fake); }
.verdict-banner.real::before { background: var(--color-real); }

.verdict-label {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-3);
  position: relative;
}

.verdict-banner.fake .verdict-label {
  color: var(--color-fake);
  text-shadow: var(--shadow-glow-fake);
  animation: fakePulse 3s ease-in-out infinite;
}

.verdict-banner.real .verdict-label {
  color: var(--color-real);
  text-shadow: var(--shadow-glow-real);
}

@keyframes fakePulse {
  0%, 100% { text-shadow: 0 0 20px rgba(239,68,68,0.4), 0 0 60px rgba(239,68,68,0.15); }
  50% { text-shadow: 0 0 40px rgba(239,68,68,0.7), 0 0 100px rgba(239,68,68,0.3); }
}

.verdict-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
}

.confidence-display {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-heading);
}

.verdict-banner.fake .confidence-display {
  background: rgba(239,68,68,0.12);
  border: 1px solid rgba(239,68,68,0.25);
  color: var(--color-fake);
}

.verdict-banner.real .confidence-display {
  background: rgba(34,197,94,0.12);
  border: 1px solid rgba(34,197,94,0.25);
  color: var(--color-real);
}

.confidence-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.verdict-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-4);
  display: block;
  animation: float 3s ease-in-out infinite;
}

/* ---------- Confidence Gauge ---------- */
.gauge-card {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.gauge-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: center;
}

.gauge-svg-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.gauge-center-text {
  position: absolute;
  text-align: center;
}

.gauge-percentage {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
  display: block;
}

.gauge-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.gauge-icon {
  font-size: 1rem;
  margin-bottom: 2px;
}

/* ---------- Contribution Chart ---------- */
.contribution-card {
  padding: var(--space-6) var(--space-8);
}

.contribution-card h3 {
  font-size: 1rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-6);
  font-weight: 600;
}

.contribution-bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contribution-row {
  display: grid;
  grid-template-columns: 80px 1fr 48px;
  align-items: center;
  gap: var(--space-3);
}

.contribution-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.contribution-track {
  height: 10px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.contribution-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.contribution-fill::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 4px; height: 100%;
  border-radius: 50%;
  background: rgba(255,255,255,0.7);
}

.contribution-value {
  font-size: 0.875rem;
  font-weight: 700;
  text-align: right;
  font-family: var(--font-heading);
}

/* ---------- Sync Profile ---------- */
.sync-card {
  padding: var(--space-6) var(--space-8);
}

.sync-card h3 {
  font-size: 1rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
  font-weight: 600;
}

.sync-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

.sync-chart-wrap {
  position: relative;
  width: 100%;
  height: 140px;
}

.sync-chart-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.sync-y-labels {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  font-size: 0.65rem;
  color: var(--text-muted);
  pointer-events: none;
}

.sync-threshold-label {
  position: absolute;
  right: 0;
  font-size: 0.7rem;
  color: rgba(124, 58, 237, 0.6);
  transform: translateY(-50%);
}

/* ---------- GradCAM Viewer ---------- */
.gradcam-card {
  padding: var(--space-6) var(--space-8);
}

.gradcam-card h3 {
  font-size: 1rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
  font-weight: 600;
}

.gradcam-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

.gradcam-image-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-glass);
  background: rgba(0,0,0,0.3);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gradcam-image {
  width: 100%;
  height: auto;
  display: block;
  max-height: 300px;
  object-fit: cover;
}

.gradcam-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-8);
  color: var(--text-muted);
  text-align: center;
}

.gradcam-placeholder .icon { font-size: 2.5rem; opacity: 0.4; }
.gradcam-placeholder p { font-size: 0.8rem; }

.gradcam-legend {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-3);
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ---------- Section Headings ---------- */
.section-heading {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-heading h2 {
  margin-bottom: var(--space-3);
}

.section-heading p {
  max-width: 540px;
  margin: 0 auto;
  font-size: 1rem;
}

/* ---------- Stats Row ---------- */
.stats-row {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  flex-wrap: wrap;
  margin: var(--space-8) 0;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-purple-light), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ---------- Gauges Layout ---------- */
.gauges-section {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

@media (max-width: 768px) {
  .gauges-section {
    grid-template-columns: 1fr;
  }
}

/* ---------- Mobile Menu ---------- */
@media (max-width: 640px) {
  .header-nav .nav-chip { display: none; }
  .hero-title { font-size: 2.2rem; }
  .verdict-banner { padding: var(--space-5); }
  .verdict-label { font-size: 3rem; }
  .contribution-row { grid-template-columns: 60px 1fr 40px; }
}

/* ---------- Animate In ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.animate-in { animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards; }
.animate-fade { animation: fadeIn 0.4s ease forwards; }
.animate-scale { animation: scaleIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }

.delay-100 { animation-delay: 0.1s; opacity: 0; }
.delay-200 { animation-delay: 0.2s; opacity: 0; }
.delay-300 { animation-delay: 0.3s; opacity: 0; }
.delay-400 { animation-delay: 0.4s; opacity: 0; }
.delay-500 { animation-delay: 0.5s; opacity: 0; }
.delay-600 { animation-delay: 0.6s; opacity: 0; }

/* ---------- Noise Texture ---------- */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px;
}

/* ---------- Info Tag ---------- */
.info-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-subtle);
}

/* ---------- Footer ---------- */
.footer {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.footer p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer strong {
  color: var(--accent-purple-light);
  font-weight: 600;
}

/* ============================================================
   MultiSense-DF — 3D Cyber & Tech Animations
   ============================================================ */

/* Perspective 3D cyber grid */
.cyber-grid-3d {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(124, 58, 237, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(124, 58, 237, 0.08) 1px, transparent 1px);
  background-size: 60px 60px;
  transform: perspective(600px) rotateX(65deg) translateY(-80px) translateZ(-50px);
  transform-origin: top center;
  animation: gridScroll 20s linear infinite;
  mask-image: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.95) 75%);
  pointer-events: none;
  z-index: 1;
}

@keyframes gridScroll {
  0% { background-position: 0 0; }
  100% { background-position: 0 1200px; }
}

/* 3D Holographic circular radar */
.hologram-container-3d {
  position: relative;
  width: 280px;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1200px;
  transform-style: preserve-3d;
  z-index: 2;
}

.hologram-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(6, 182, 212, 0.45);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.25), inset 0 0 15px rgba(6, 182, 212, 0.15);
  transform-style: preserve-3d;
  pointer-events: none;
}

.hologram-ring-1 {
  width: 100%;
  height: 100%;
  transform: rotateX(75deg) rotateY(0deg) translateZ(0);
  animation: rotateRing1 12s linear infinite;
}

.hologram-ring-2 {
  width: 82%;
  height: 82%;
  border-style: solid;
  border-color: rgba(124, 58, 237, 0.45);
  box-shadow: 0 0 25px rgba(124, 58, 237, 0.35);
  transform: rotateX(75deg) rotateY(12deg) translateZ(-15px);
  animation: rotateRing2 9s linear infinite;
}

.hologram-ring-3 {
  width: 62%;
  height: 62%;
  border-width: 1.5px;
  border-color: rgba(6, 182, 212, 0.7);
  transform: rotateX(75deg) rotateY(-8deg) translateZ(15px);
  animation: rotateRing3 6s linear infinite;
}

@keyframes rotateRing1 {
  0% { transform: rotateX(75deg) rotateZ(0deg); }
  100% { transform: rotateX(75deg) rotateZ(360deg); }
}

@keyframes rotateRing2 {
  0% { transform: rotateX(75deg) rotateY(12deg) rotateZ(360deg); }
  100% { transform: rotateX(75deg) rotateY(12deg) rotateZ(0deg); }
}

@keyframes rotateRing3 {
  0% { transform: rotateX(75deg) rotateY(-8deg) rotateZ(0deg); }
  100% { transform: rotateX(75deg) rotateY(-8deg) rotateZ(-360deg); }
}

/* High-tech vertical scanning line */
.scanline-effect {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.8), transparent);
  box-shadow: 0 0 8px rgba(6, 182, 212, 0.8), 0 0 16px rgba(6, 182, 212, 0.4);
  opacity: 0.9;
  pointer-events: none;
  animation: scanSweep 4s ease-in-out infinite;
  z-index: 10;
}

@keyframes scanSweep {
  0% { top: 0%; }
  50% { top: 100%; }
  100% { top: 0%; }
}

/* Dynamic 3D tilt card container */
.tilt-card-3d-wrapper {
  perspective: 1200px;
  transform-style: preserve-3d;
}

.tilt-card-3d {
  transform-style: preserve-3d;
  transition: transform 0.15s ease-out, box-shadow var(--transition-base), border-color var(--transition-base);
}

.tilt-card-3d:hover {
  border-color: rgba(124, 58, 237, 0.6);
  box-shadow: var(--shadow-card), 0 0 35px rgba(124, 58, 237, 0.15);
}

/* Floating HUD widget */
.float-3d {
  animation: floatAnim 5s ease-in-out infinite;
}

@keyframes floatAnim {
  0%, 100% { transform: translateY(0) rotateX(0deg) rotateY(0deg); }
  50% { transform: translateY(-8px) rotateX(1.5deg) rotateY(-1.5deg); }
}

/* HUD Scanning Radar Center Spot */
.hologram-core {
  position: absolute;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.25) 0%, transparent 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: pulseCore 3s ease-in-out infinite;
  z-index: 3;
}

@keyframes pulseCore {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
}

.hud-telemetry {
  font-family: monospace;
  font-size: 10px;
  color: var(--accent-cyan-light);
  opacity: 0.65;
  text-shadow: 0 0 5px rgba(6, 182, 212, 0.5);
  pointer-events: none;
}