.register-wrapper {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}
.register-card {
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(15, 118, 110, 0.15);
    overflow: hidden;
    width: 100%;
    max-width: 480px;
    animation: slideUp 0.5s ease-out;
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.register-header {
    background: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%);
    padding: 40px 30px;
    text-align: center;
}
.register-header .logo-icon {
    width: 70px;
    height: 70px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    backdrop-filter: blur(10px);
}
.register-header .logo-icon i {
    font-size: 32px;
    color: #fff;
}
.register-header h2 {
    color: #fff;
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}
.register-header p {
    color: rgba(255,255,255,0.85);
    margin: 8px 0 0;
    font-size: 14px;
}
.register-body {
    padding: 35px 30px;
}
.register-input-group {
    position: relative;
    margin-bottom: 18px;
}
.register-input-group .input-icon {
    position: absolute;
    left: 16px;
    top: 14px;
    color: #0f766e;
    font-size: 16px;
    z-index: 2;
    pointer-events: none;
}
.register-input-group input {
    width: 100%;
    padding: 14px 16px 14px 45px;
    border: 2px solid #e8e8e8;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s;
    background: #fafafa;
    box-sizing: border-box;
}
.register-input-group input:focus {
    border-color: #14b8a6;
    background: #fff;
    box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.1);
    outline: none;
}
.register-input-group .code-input {
    padding-right: 120px;
}
.register-input-group .btn-send-code {
    position: absolute;
    right: 6px;
    top: 6px;
    padding: 8px 16px;
    background: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%);
    border: none;
    border-radius: 8px;
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}
.register-input-group .btn-send-code:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(15, 118, 110, 0.3);
}
.register-input-group .btn-send-code:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}
.register-input-group .help-text {
    font-size: 12px;
    color: #999;
    margin-top: 6px;
    padding-left: 4px;
}
.register-input-group .help-text.success {
    color: #14b8a6;
}
.register-input-group .help-text.error {
    color: #e74c3c;
}
.btn-register {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%);
    border: none;
    border-radius: 12px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
}
.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(15, 118, 110, 0.35);
}
.register-divider {
    display: flex;
    align-items: center;
    margin: 25px 0;
    color: #999;
    font-size: 13px;
}
.register-divider::before,
.register-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #eee;
}
.register-divider span {
    padding: 0 15px;
}
.social-register {
    display: flex;
    gap: 12px;
}
.btn-social {
    flex: 1;
    padding: 12px;
    border-radius: 12px;
    border: 2px solid #eee;
    background: #fff;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #555;
    text-decoration: none;
}
.btn-social:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.btn-social.qq {
    border-color: #12b7f5;
    color: #12b7f5;
}
.btn-social.qq:hover {
    background: #12b7f5;
    color: #fff;
}
.btn-social.wx {
    border-color: #07c160;
    color: #07c160;
}
.btn-social.wx:hover {
    background: #07c160;
    color: #fff;
}
.register-footer {
    text-align: center;
    padding: 20px 30px 30px;
    color: #888;
    font-size: 14px;
}
.register-footer a {
    color: #14b8a6;
    font-weight: 600;
    text-decoration: none;
}
.register-footer a:hover {
    color: #0f766e;
}

@media (max-width: 992px) {
    .register-wrapper {
        padding: 20px;
    }
    .register-card {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .register-wrapper {
        padding: 15px;
        min-height: 100vh;
        display: flex;
        align-items: center;
    }
    .register-card {
        width: 100%;
        border-radius: 16px;
    }
    .register-header {
        padding: 30px 20px 20px;
    }
    .register-header .logo-icon {
        width: 60px;
        height: 60px;
    }
    .register-header .logo-icon i {
        font-size: 28px;
    }
    .register-header h2 {
        font-size: 22px;
    }
    .register-header p {
        font-size: 13px;
    }
    .register-body {
        padding: 25px 20px;
    }
    .register-input-group {
        margin-bottom: 15px;
    }
    .register-input-group input {
        padding: 14px 16px 14px 42px;
        font-size: 15px;
    }
    .register-input-group .input-icon {
        left: 14px;
        top: 12px;
        font-size: 14px;
    }
    .register-input-group .btn-send-code {
        padding: 8px 12px;
        font-size: 12px;
    }
    .register-input-group .help-text {
        font-size: 12px;
    }
    .btn-register {
        padding: 14px;
        font-size: 15px;
        min-height: 48px;
    }
    .register-divider {
        margin: 20px 0;
        font-size: 12px;
    }
    .social-register {
        flex-direction: column;
        gap: 10px;
    }
    .btn-social {
        padding: 12px;
        font-size: 14px;
    }
    .register-footer {
        padding: 15px 20px 25px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .register-header {
        padding: 25px 15px 15px;
    }
    .register-header .logo-icon {
        width: 50px;
        height: 50px;
    }
    .register-header .logo-icon i {
        font-size: 24px;
    }
    .register-header h2 {
        font-size: 20px;
    }
    .register-body {
        padding: 20px 15px;
    }
    .register-input-group input {
        font-size: 14px;
    }
    .btn-register {
        font-size: 14px;
    }
}