:root {
  --primary: #2f80ed;
  --primary-dark: #1c64d1;
  --accent: #00b4d8;
  --bg-light: #eef5ff;
  --card-bg: rgba(255,255,255,0.85);
  --card-border: #e0ecfb;
  --text: #101826;
  --text-dim: #55606e;
  --danger: #ef4444;
  --success: #16a34a;
  --shadow: 0 15px 40px rgba(47,128,237,0.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: linear-gradient(160deg, var(--bg-light) 0%, #ffffff 55%, var(--bg-light) 100%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  position: relative;
}

body::before, body::after {
  content: '';
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(110px);
  z-index: 0;
  opacity: 0.35;
  animation: float 12s ease-in-out infinite;
}
body::before { background: var(--primary); top: -120px; left: -120px; }
body::after { background: var(--accent); bottom: -120px; right: -120px; animation-delay: 3s; }

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(40px) translateX(30px); }
}

.auth-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  margin: 20px;
  padding: 40px 32px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
  animation: cardIn 0.6s ease forwards; opacity: 1;
}

@keyframes cardIn {
  to { opacity: 1; }
  from { opacity: 0; transform: translateY(30px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-card:hover { transform: translateY(-4px); }

.brand { text-align: center; margin-bottom: 28px; }
.brand h1 {
  font-size: 24px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}
.brand p { color: var(--text-dim); font-size: 13px; margin-top: 4px; }

.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 6px; font-weight: 600; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: #f7fafe;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: all 0.25s ease;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(47,128,237,0.15);
}

.btn {
  width: 100%;
  padding: 13px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(47,128,237,0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(47,128,237,0.45); }
.btn:active { transform: translateY(0); }

.btn-google {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  background: #fff;
  color: #333;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  margin-bottom: 16px;
  transition: transform 0.2s ease;
}
.btn-google:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.08); }

.divider { display: flex; align-items: center; gap: 10px; color: var(--text-dim); font-size: 12px; margin: 18px 0; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--card-border); }

.foot-link { text-align: center; margin-top: 18px; font-size: 13px; color: var(--text-dim); }
.foot-link a { color: var(--primary); text-decoration: none; font-weight: 600; }

.alert { padding: 12px 14px; border-radius: 10px; font-size: 13px; margin-bottom: 16px; }
.alert-error { background: rgba(239,68,68,0.08); border: 1px solid var(--danger); color: #b91c1c; }
.alert-success { background: rgba(22,163,74,0.08); border: 1px solid var(--success); color: #15803d; }

.form-group textarea {
  line-height: 1.6;
  resize: vertical;
  min-height: 90px;
  font-family: 'Segoe UI', system-ui, sans-serif;
}
.otp-inputs input {
  width: 44px; height: 50px; text-align: center; font-size: 20px;
  background: #f7fafe; border: 1px solid var(--card-border);
  border-radius: 10px; color: var(--text);
}