:root { --orange: #FF6600; --bg: #f9fafb; --text: #1f2937; }
body { font-family: 'Inter', sans-serif; background: var(--bg); display: flex; justify-content: center; align-items: center; min-height: 100vh; margin: 0; }
.auth-card { background: white; padding: 2.5rem; border-radius: 1.5rem; box-shadow: 0 10px 25px rgba(0,0,0,0.05); width: 100%; max-width: 400px; }
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 2rem; }
.logo-text { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.5rem; color: var(--text); }
.form-step { display: none; }
.form-step.active { display: block; animation: fadeIn 0.4s ease; }
h1 { font-size: 1.5rem; margin-bottom: 0.5rem; color: var(--text); }
p { color: #6b7280; font-size: 0.9rem; margin-bottom: 1.5rem; line-height: 1.5; }
.input-group { margin-bottom: 1.25rem; }
label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.5rem; }
input { width: 100%; padding: 0.8rem; border: 1px solid #e5e7eb; border-radius: 0.5rem; outline: none; transition: 0.2s; }
input:focus { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.1); }
.btn-primary { width: 100%; background: var(--orange); color: white; border: none; padding: 1rem; border-radius: 0.5rem; font-weight: 700; cursor: pointer; margin-top: 1rem; }
.back-link { display: block; text-align: center; margin-top: 1.5rem; color: var(--orange); text-decoration: none; font-size: 0.9rem; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }