frontend/src/index.css

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');
@import "tailwindcss";

/* ===== DESIGN SYSTEM ===== */
:root {
  --bg-deep: #030712;
  --bg-surface: #0a0f1e;
  --card-bg: rgba(15, 23, 42, 0.5);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-border-hover: rgba(255, 255, 255, 0.12);
  --accent-cyan: #06b6d4;
  --accent-purple: #a855f7;
  --accent-blue: #3b82f6;
  --accent-pink: #ec4899;
  --text-primary: #f1f5f9;
  --text-secondary: #64748b;
  --text-muted: #475569;
  --glow-cyan: rgba(6, 182, 212, 0.15);
  --glow-purple: rgba(168, 85, 247, 0.15);
}

* {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  overflow-x: hidden;
  min-height: 100vh;
}

/* ===== ANIMATED BACKGROUND ===== */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background:
    radial-gradient(ellipse 600px 400px at 15% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 500px 500px at 85% 80%, rgba(168, 85, 247, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 400px 300px at 50% 50%, rgba(59, 130, 246, 0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  animation: bgPulse 8s ease-in-out infinite alternate;
}

@keyframes bgPulse {
  0% {
    opacity: 0.7;
  }

  100% {
    opacity: 1;
  }
}

/* Noise texture overlay */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.04'/%3E%3C/svg%3E");
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 5px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ===== GLASS CARD ===== */
.glass-card {
  position: relative;
  background: var(--card-bg);
  backdrop-filter: blur(24px) saturate(1.2);
  -webkit-backdrop-filter: blur(24px) saturate(1.2);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.glass-card:hover {
  border-color: var(--glass-border-hover);
  box-shadow: 0 8px 40px -12px rgba(0, 0, 0, 0.4), 0 0 20px var(--glow-cyan);
}

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

.gradient-text-warm {
  background: linear-gradient(135deg, #f97316, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== QUANTUM BUTTON ===== */
.btn-quantum {
  position: relative;
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
  color: white;
  border: none;
  border-radius: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 20px -4px rgba(6, 182, 212, 0.4);
  overflow: hidden;
  z-index: 1;
}

.btn-quantum::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-cyan) 100%);
  opacity: 0;
  transition: opacity 0.4s;
  z-index: -1;
}

.btn-quantum:hover::before {
  opacity: 1;
}

.btn-quantum:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px -8px rgba(6, 182, 212, 0.5), 0 0 20px rgba(168, 85, 247, 0.2);
}

.btn-quantum:active {
  transform: translateY(-1px);
}

/* ===== INPUTS ===== */
.quantum-input {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 16px 20px;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
}

.quantum-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.1), 0 0 20px rgba(6, 182, 212, 0.05);
  background: rgba(0, 0, 0, 0.4);
}

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

/* Select dropdown */
select.quantum-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 12px center;
  background-repeat: no-repeat;
  background-size: 20px;
  padding-right: 40px;
}

select.quantum-input option {
  background: #0f172a;
  color: white;
}

/* ===== FLOATING ORB ANIMATION ===== */
@keyframes float {

  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }

  50% {
    transform: translateY(-20px) rotate(3deg);
  }
}

@keyframes glow {

  0%,
  100% {
    opacity: 0.5;
  }

  50% {
    opacity: 1;
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}

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

.animate-glow {
  animation: glow 3s ease-in-out infinite;
}

/* Shimmer loading effect */
.shimmer {
  background: linear-gradient(90deg, transparent 25%, rgba(255, 255, 255, 0.05) 50%, transparent 75%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

/* ===== STAT COUNTER ===== */
.stat-glow {
  position: relative;
}

.stat-glow::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  opacity: 0;
  z-index: -1;
  transition: opacity 0.3s;
  filter: blur(8px);
}

.stat-glow:hover::after {
  opacity: 0.3;
}