/* ==========================================================================
   STALKEIA AI - MAIN DESIGN SYSTEM & CORE UTILITIES
   ========================================================================== */

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

:root {
  /* Color Palette */
  --bg-dark: #07080c;
  --bg-card: rgba(15, 17, 26, 0.85);
  --bg-card-border: rgba(139, 92, 246, 0.25);
  --bg-card-border-glow: rgba(168, 85, 247, 0.5);
  
  --primary-purple: #8b5cf6;
  --primary-violet: #a855f7;
  --primary-pink: #ec4899;
  
  --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #a855f7 50%, #d946ef 100%);
  --gradient-btn: linear-gradient(135deg, #7c3aed 0%, #9333ea 50%, #c026d3 100%);
  --gradient-btn-hover: linear-gradient(135deg, #6d28d9 0%, #7e22ce 50%, #a21caf 100%);
  
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-highlight: #c084fc;
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  /* Fonts */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Layout */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  
  --shadow-glow: 0 0 25px rgba(139, 92, 246, 0.35);
  --shadow-glow-lg: 0 0 45px rgba(168, 85, 247, 0.5);
}

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

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-body);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Matrix Background Canvas */
#matrix-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  pointer-events: none;
}

/* Screen Wrapper */
.app-container {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-sizing: border-box;
}

body.feed-active,
body.feed-mode,
body:has(#step-instagram-feed.active),
body:has(#step-ig-notifications.active),
body:has(#step-ig-direct.active),
body:has(#step-ig-login.active) {
  background-color: #000000 !important;
  overflow-x: hidden !important;
}

body.feed-active #matrix-canvas,
body.feed-mode #matrix-canvas,
body:has(#step-instagram-feed.active) #matrix-canvas,
body:has(#step-ig-notifications.active) #matrix-canvas,
body:has(#step-ig-direct.active) #matrix-canvas,
body:has(#step-ig-login.active) #matrix-canvas {
  display: none !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

body.feed-active .app-container,
body.feed-mode .app-container,
.app-container:has(#step-instagram-feed.active),
.app-container:has(#step-ig-notifications.active) {
  padding: 0 !important;
  width: 100% !important;
  max-width: 100% !important;
  justify-content: flex-start !important;
  align-items: stretch !important;
  margin: 0 !important;
}

/* Step Visibility */
.funnel-step {
  display: none;
  width: 100%;
  max-width: 540px;
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.funnel-step.active {
  display: block;
}

.funnel-step.full-screen {
  max-width: 100% !important;
  width: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
  transform: none !important;
  animation: none !important;
}

/* Typography Helpers */
.highlight {
  color: var(--text-highlight);
  background: linear-gradient(135deg, #c084fc 0%, #e879f9 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 28px;
  background: var(--gradient-btn);
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  box-shadow: var(--shadow-glow);
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn-primary:hover {
  background: var(--gradient-btn-hover);
  box-shadow: var(--shadow-glow-lg);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Glass Card */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), inset 0 1px 1px rgba(255, 255, 255, 0.1);
  text-align: center;
  transition: border-color 0.3s ease;
}

.glass-card:hover {
  border-color: var(--bg-card-border-glow);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
  }
  50% {
    box-shadow: 0 0 35px rgba(168, 85, 247, 0.6);
  }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Global Visibility Helper */
.hidden {
  display: none !important;
}