/* Variables de thème Paramynd */
:root {
  --r: 5px; /* Radius global demandé */
  --black: #050507;
  --purple: #7c5cfc;
  --teal: #06d6a0;
  --white: #ffffff;
  --gray-2: rgba(255,255,255,0.5);
  --error: #ef476f;
  --shadow-lg: 0 24px 64px rgba(0,0,0,0.7);
}

*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--black);
  color: var(--white);
  min-height: 133.33vh;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
  zoom: 0.75;
}

/* ════════════════════════════════════════════════
   ARRIÈRE-PLAN ANIMÉ (BRAIN CANVAS)
   ════════════════════════════════════════════════ */
#brainCanvas {
  position: fixed; top: 0; left: 0;
  width: 133.33vw; height: 133.33vh;
  pointer-events: none; z-index: -1;
  opacity: 0;
  animation: canvasFadeIn 2s ease 0.5s forwards;
}
@keyframes canvasFadeIn { to { opacity: 1; } }

.hero-ambient {
  position: fixed; top: 0; left: 0; width: 133.33vw; height: 133.33vh; pointer-events: none; z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, rgba(5,5,7,0) 30%, rgba(5,5,7,0.55) 100%),
    radial-gradient(ellipse 100% 30% at 50% 100%, rgba(5,5,7,0.8) 0%, transparent 100%);
}

/* ════════════════════════════════════════════════
   CARTE GLASSMORPHISM PREMIUM
   ════════════════════════════════════════════════ */
.demo-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 400px;
  padding: 1.2rem;
  margin: 24px auto;
  animation: fadeUp 0.8s ease-out;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.demo-card {
  /* Effet verre premium */
  background: rgba(18, 18, 24, 0.45);
  backdrop-filter: blur(24px) saturate(1.5);
  -webkit-backdrop-filter: blur(24px) saturate(1.5);
  
  /* Bordure délicate et radius global de 5px */
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--r);
  
  padding: 2rem 2.2rem;
  box-shadow: var(--shadow-lg), 0 0 100px rgba(124,92,252,0.12);
}

.demo-header {
  text-align: center;
  margin-bottom: 1.6rem;
}

.demo-logo {
  background: transparent;
  box-shadow: none;
  border: none;
  display: block;
  margin: 0 auto 0.5rem;
}

.demo-header h1 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  letter-spacing: -0.5px;
}
.demo-header p {
  font-size: 0.85rem;
  color: var(--gray-2);
  margin: 0;
}

/* ════════════════════════════════════════════════
   CHAMPS DE FORMULAIRE
   ════════════════════════════════════════════════ */
.form-group {
  display: flex; flex-direction: column; margin-bottom: 1.2rem;
}
.form-group label {
  font-size: 0.75rem; color: var(--gray-2); margin-bottom: 0.4rem; font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--r);
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  color: #fff;
  font-size: 0.85rem;
  font-family: inherit;
  transition: all 0.2s ease;
}

.form-group input:-webkit-autofill,
.form-group input:-webkit-autofill:hover, 
.form-group input:-webkit-autofill:focus, 
.form-group input:-webkit-autofill:active {
  -webkit-box-shadow: 0 0 0 30px #1a1a24 inset !important;
  -webkit-text-fill-color: white !important;
  transition: background-color 5000s ease-in-out 0s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--purple);
  background: rgba(255,255,255,0.08);
  box-shadow: 0 0 0 3px rgba(124,92,252,0.2);
}

.form-group input.invalid {
  border-color: var(--error) !important;
  background: rgba(239, 71, 111, 0.05) !important;
  box-shadow: 0 0 0 3px rgba(239, 71, 111, 0.15) !important;
}

/* Bouton principal */
.submit-btn {
  width: 100%; padding: 0.8rem; border-radius: var(--r); border: none;
  background: linear-gradient(135deg, var(--purple), var(--teal));
  color: #fff; font-size: 0.9rem; font-weight: 600; cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(124,92,252,0.3);
  display: flex; justify-content: center; align-items: center; gap: 0.5rem;
  margin-top: 0.5rem;
}
.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(124,92,252,0.5);
}

.back-link {
  display: block; text-align: center; margin-top: 1.5rem;
  font-size: 0.75rem; color: var(--gray-2); text-decoration: none; transition: color 0.2s;
}

.messages-container {
  margin-bottom: 1.2rem;
}
.alert {
  padding: 0.7rem 0.9rem;
  border-radius: var(--r);
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
  color: #fff;
}
.alert-error {
  background: rgba(239, 71, 111, 0.1);
  border: 1px solid rgba(239, 71, 111, 0.3);
  color: #ffb3c1;
}
.alert-success {
  background: rgba(6, 214, 160, 0.1);
  border: 1px solid rgba(6, 214, 160, 0.3);
  color: #99e2b4;
}
.alert-info, .alert-warning {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

@media (max-width: 600px) {
  .demo-container { padding: 1rem; margin: 20px auto; }
  .demo-card { padding: 1.5rem; }
}

@keyframes spin { 100% { transform: rotate(360deg); } }