:root {
    --body-color: hsl(0, 0%, 98%);
    --color-surface: #ffffff;

    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-soft: #eff6ff;

    --color-dark: #111827;
    --color-muted: #6b7280;
    --color-border: #e5e7eb;

    --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.08);
    --shadow-blue: 0 12px 26px rgba(37, 99, 235, 0.22);

    --transition: 0.25s ease;
}

.login-section {
    min-height: 100vh;
    padding: 120px 18px 50px;

    display: flex;
    align-items: center;
    justify-content: center;

    background: var(--body-color);
}

.login-card {
    width: 100%;
    max-width: 430px;
    padding: 30px;

    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 18px;
    box-shadow: var(--shadow-md);
}

.login-card h2 {
    margin: 0 0 8px;

    color: var(--color-primary);
    font-size: 28px;
    font-weight: 600;
    text-align: center;
}

.login-subtitle {
    margin: 0 0 24px;

    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.5;
    text-align: center;
}

.alert {
    margin-bottom: 18px;
    padding: 13px 15px;

    display: flex;
    align-items: flex-start;
    gap: 10px;

    border-radius: 12px;

    font-size: 14px;
    line-height: 1.5;
}

.alert.danger {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.alert.success {
    background: #ecfdf5;
    border: 1px solid #bbf7d0;
    color: #166534;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    margin-bottom: 8px;

    display: block;

    color: #374151;
    font-size: 14px;
    font-weight: 600;
}

.input-wrapper {
    position: relative;
}

.input-wrapper i {
    position: absolute;
    top: 50%;
    left: 14px;

    transform: translateY(-50%);

    color: var(--color-primary);
    font-size: 14px;
}

.input-wrapper input {
    width: 100%;
    min-height: 48px;
    padding: 13px 14px 13px 42px;

    background: var(--body-color);
    border: 1px solid #dbe3ef;
    border-radius: 12px;
    outline: none;

    color: var(--color-dark);
    font-family: "Roboto", sans-serif;
    font-size: 14px;
    font-weight: 500;

    transition: var(--transition);
}

.input-wrapper input::placeholder {
    color: #94a3b8;
}

.input-wrapper input:focus {
    background: #ffffff;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-soft);
}

.checkbox-row {
    margin: 2px 0 18px;

    display: flex;
    align-items: center;
    gap: 9px;

    color: var(--color-muted);
    font-size: 14px;
    cursor: pointer;
}

.checkbox-row input {
    width: 15px;
    height: 15px;
    accent-color: var(--color-primary);
}

.login-btn {
    width: 100%;
    min-height: 50px;
    padding: 14px 20px;

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;

    border: none;
    border-radius: 12px;
    background: var(--color-primary);
    color: #ffffff;

    font-size: 15px;
    font-weight: 500;
    cursor: pointer;

    box-shadow: var(--shadow-blue);
    transition: var(--transition);
}

.login-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

@media (max-width: 600px) {
    .login-section {
        padding: 100px 16px 36px;
    }

    .login-card {
        padding: 22px;
    }

    .login-card h2 {
        font-size: 24px;
    }
}

@media (max-width: 420px) {
    .login-section {
        padding-inline: 14px;
    }

    .login-card {
        padding: 18px;
    }
}


.login-account-help {
    margin: -10px 0 22px;

    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.5;
    text-align: center;
}

.login-account-help a {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
}

.login-account-help a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}