body { background: linear-gradient(135deg, #a0245e, #c2185b, #8e1a5e); display: flex; flex-direction: column; justify-content: center; min-height: 100vh; position: relative; }

.auth-container { padding: 24px 20px; }
.back-nav { position: absolute; top: 20px; left: 20px; color: #fff; text-decoration: none; font-size: 28px; line-height: 1; opacity: 0.8; transition: opacity 0.2s; }
.back-nav:hover { opacity: 1; }

.auth-logo { text-align: center; margin-bottom: 24px; }
.auth-logo .logo-icon { font-size: 40px; margin-bottom: 8px; }
.auth-logo h2 { color: #fff; font-size: 22px; font-weight: 700; letter-spacing: 1px; }

.auth-card { background: #fff; border-radius: 20px; padding: 32px 24px; box-shadow: 0 8px 32px rgba(0,0,0,0.15); }
.auth-card h3 { font-size: 20px; font-weight: 700; color: #222; margin-bottom: 24px; text-align: center; }

.auth-form .form-group { margin-bottom: 16px; }
.auth-form .form-group label { display: block; font-size: 13px; font-weight: 500; color: #666; margin-bottom: 6px; }
.auth-form .form-group input { width: 100%; padding: 12px 16px; border: 1px solid #ddd; border-radius: 10px; font-size: 14px; color: #333; background: #fafafa; outline: none; transition: border-color 0.2s; }
.auth-form .form-group input:focus { border-color: #e91e63; background: #fff; }

.auth-submit { width: 100%; padding: 14px; border: none; border-radius: 30px; background: linear-gradient(135deg, #e91e63, #c2185b); color: #fff; font-size: 15px; font-weight: 600; cursor: pointer; margin-top: 12px; transition: opacity 0.2s; letter-spacing: 0.5px; }
.auth-submit:hover { opacity: 0.9; }

.msg-box { display: none; padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 16px; text-align: center; }
.msg-box.error { background: #fce4ec; color: #c62828; }
.msg-box.success { background: #e8f5e9; color: #2e7d32; }
.msg-box.show { display: block; }