:root {
    --login-primary: #2563eb;
    --login-primary-hover: #1d4ed8;
    --back-primary: #ff0000;
    --back-primary-hover: #b30000;
    --login-bg: #f1f5f9;
    --login-card: #ffffff;
    --login-text: #0f172a;
    --login-muted: #64748b;
    --login-border: #e2e8f0;
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient( circle at top left, rgba(37, 99, 235, 0.12), transparent 35% ), linear-gradient( 135deg, #f8fafc 0%, var(--login-bg) 100% );
    color: var(--login-text);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.login-wrapper {
    width: 100%;
    max-width: 430px;
    padding: 24px;
}

.login-card {
    background: var(--login-card);
    border: 1px solid var(--login-border);
    border-radius: 18px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.10), 0 4px 12px rgba(15, 23, 42, 0.04);
    overflow: hidden;
}

.login-header {
    padding: 34px 34px 24px;
    text-align: center;
}

.brand-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: linear-gradient( 135deg, var(--login-primary), #4f46e5 );
    color: #ffffff;
    font-size: 28px;
    box-shadow: 0 12px 25px rgba(37, 99, 235, 0.25);
}

.brand-title {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand-subtitle {
    margin: 7px 0 0;
    color: var(--login-muted);
    font-size: 14px;
}

.login-body {
    padding: 10px 34px 34px;
}

.form-label {
    margin-bottom: 7px;
    font-size: 13px;
    font-weight: 600;
    color: #334155;
}

.input-group-text {
    min-width: 44px;
    justify-content: center;
    background: #f8fafc;
    border-color: var(--login-border);
    color: #64748b;
}

.form-control {
    min-height: 46px;
    border-color: var(--login-border);
    font-size: 14px;
}

    .form-control:focus {
        border-color: var(--login-primary);
        box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.12);
    }
.back-button {
    min-height: 46px;
    border: 0;
    border-radius: 8px;
    background: var(--back-primary);
    font-size: 14px;
    font-weight: 600;
    transition: background-color 0.15s ease, transform 0.15s ease;
    align-content: center;
}
    .back-button:hover {
        background: var(--back-primary-hover);
    }

    .back-button:active {
        transform: translateY(1px);
    }


.login-button {
    min-height: 46px;
    border: 0;
    border-radius: 8px;
    background: var(--login-primary);
    font-size: 14px;
    font-weight: 600;
    transition: background-color 0.15s ease, transform 0.15s ease;
}

    .login-button:hover {
        background: var(--login-primary-hover);
    }

    .login-button:active {
        transform: translateY(1px);
    }

.remember-label {
    color: #64748b;
    font-size: 13px;
    cursor: pointer;
}

.login-footer {
    padding: 18px 34px;
    border-top: 1px solid var(--login-border);
    background: #f8fafc;
    text-align: center;
    color: #94a3b8;
    font-size: 12px;
}

.validation-summary {
    border-radius: 8px;
    font-size: 13px;
}

.field-validation-error {
    display: block;
    margin-top: 5px;
    font-size: 12px;
}

@media (max-width: 575.98px) {
    .login-wrapper {
        padding: 16px;
    }

    .login-header {
        padding: 28px 24px 20px;
    }

    .login-body {
        padding: 10px 24px 28px;
    }

    .login-footer {
        padding: 16px 24px;
    }
}