/* ---- Unified Premium Design System ---- */
:root {
  /* Core Colors */
  --canvas: #fbfbfa;
  --card: #ffffff;
  --surface: #f5f5f5;
  --surface-2: #efeff0;
  --border: #e6e6e4;
  --border-light: rgba(255, 255, 255, 0.4);
  
  /* Text Colors */
  --fg: #14151a;
  --muted: #65656d;
  
  /* Brand Colors */
  --primary: #8f66f8;
  --primary-2: #7749fe;
  --primary-deep: #7c5ce8;
  --indigo-accent: #4a28e8;
  --pink-accent: #ff4d85;
  
  /* Utilities */
  --whatsapp: #25d366;
  --blue: #0b84ff;
  --gray: #e9e9eb;
  
  /* Glassmorphism & Shadows */
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-shadow: 0 8px 32px 0 rgba(143, 102, 248, 0.08);
  --premium-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);

  /* Layout */
  --radius: 1rem;
  --radius-lg: 1.5rem;
  --radius-pill: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset */
* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--canvas);
  color: var(--fg);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all var(--transition-fast);
}

img {
  max-width: 100%;
  display: block;
}

/* Typography Enhancements */
h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary-2), var(--indigo-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Glassmorphism Classes */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.glass-panel:hover {
  transform: translateY(-4px);
  box-shadow: var(--premium-shadow);
}

/* Enhanced Buttons */
.btn-premium {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--primary-2), var(--indigo-accent));
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  height: 48px;
  padding: 0 1.5rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
  box-shadow: 0 6px 16px rgba(119, 73, 254, 0.25);
}

.btn-premium:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(119, 73, 254, 0.35);
  filter: brightness(1.1);
}

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

/* Dynamic Gradient Backgrounds */
.bg-gradient-animated {
  background: linear-gradient(-45deg, #fbfbfa, #f0ebff, #e6dcff, #fbfbfa);
  background-size: 400% 400%;
  animation: gradientBG 15s ease infinite;
}

@keyframes gradientBG {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Micro Animations */
.animate-fade-in {
  animation: fadeIn 0.6s var(--transition-smooth) forwards;
}

.animate-fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.7s var(--transition-smooth) forwards;
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
  100% { transform: translateY(0px); }
}

/* Input Fields (Premium) */
.input-premium {
  width: 100%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.8);
  padding: 0 1rem;
  height: 52px;
  border-radius: var(--radius);
  font-size: 15px;
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
}

.input-premium:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(143, 102, 248, 0.15);
}