* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    min-height: 100%;
    margin: 0;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(135deg, #111827, #323641);
    color: #1f2937;
}

.login-wrapper {
    min-height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 25px;
}

.login-card {
    width: 100%;
    max-width: 430px;
    background: #ffffff;
    border-radius: 24px;
    padding: 40px 32px;
    text-align: center;
    box-shadow: 0 25px 70px rgba(0,0,0,.25);
}

.login-icon {
    width: 76px;
    height: 76px;
    margin: 0 auto 22px;
    border-radius: 50%;
    background: #111827;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 34px;
}

.login-card h1 {
    margin: 0;
    font-size: 28px;
    font-weight: 800;
    color: #111827;
}

.login-text {
    margin: 12px 0 25px;
    color: #6b7280;
    font-size: 15px;
}

.form-label {
    font-weight: 600;
    color: #374151;
}

.form-control {
    height: 46px;
    border-radius: 12px;
}

.btn-login {
    width: 100%;
    border: none;
    background: #111827;
    color: #ffffff;
    padding: 14px;
    border-radius: 12px;
    font-weight: 700;
}

.btn-login:hover {
    background: #323641;
}

.back-home {
    display: inline-block;
    margin-top: 18px;
    color: #6b7280;
    font-size: 14px;
}

@media (max-width: 576px) {
    .login-card {
        padding: 34px 22px;
    }
}